| 
                 
                    Closing price on 4/18/2008
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    21.00 | 
                 
                
                    | High | 
                    21.40 | 
                 
                
                    | Low | 
                    20.20 | 
                     
                
                    | Volume | 
                    4,300 | 
                                 
                
                    | Split-adjusted Price | 
                    4.71 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SRA Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/18/2008
             | 
            
                -1.60 / -7.34%
             |             
            
                21.00
             |           
            
                21.40
             |               
            
                20.20
             |                           
            
                20.20
             | 
            
                20.20
             |                     
            
                4.71
             |                                 
            
                4,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2008
             | 
            
                +0.60 / +2.83%
             |             
            
                20.60
             |           
            
                21.80
             |               
            
                20.60
             |                           
            
                21.80
             | 
            
                21.80
             |                     
            
                5.08
             |                                 
            
                16,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2008
             | 
            
                -0.60 / -2.75%
             |             
            
                21.20
             |           
            
                21.20
             |               
            
                21.20
             |                           
            
                21.20
             | 
            
                21.20
             |                     
            
                4.94
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2008
             | 
            
                -0.60 / -2.68%
             |             
            
                21.80
             |           
            
                21.80
             |               
            
                21.80
             |                           
            
                21.80
             | 
            
                21.80
             |                     
            
                5.08
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2008
             | 
            
                -0.60 / -2.61%
             |             
            
                22.40
             |           
            
                22.40
             |               
            
                22.40
             |                           
            
                22.40
             | 
            
                22.40
             |                     
            
                5.22
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2008
             | 
            
                -1.00 / -4.17%
             |             
            
                23.10
             |           
            
                23.10
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                5.36
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/8/2008
             | 
            
                +0.40 / +1.69%
             |             
            
                24.30
             |           
            
                24.30
             |               
            
                22.90
             |                           
            
                24.00
             | 
            
                24.00
             |                     
            
                5.59
             |                                 
            
                4,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/7/2008
             | 
            
                +0.60 / +2.61%
             |             
            
                23.60
             |           
            
                23.60
             |               
            
                23.60
             |                           
            
                23.60
             | 
            
                23.60
             |                     
            
                5.50
             |                                 
            
                4,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2008
             | 
            
                +0.40 / +1.77%
             |             
            
                23.00
             |           
            
                23.00
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.00
             |                     
            
                5.36
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2008
             | 
            
                0.00 / 0.00%
             |             
            
                22.60
             |           
            
                22.60
             |               
            
                22.60
             |                           
            
                22.60
             | 
            
                22.60
             |                     
            
                5.26
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2008
             | 
            
                +0.40 / +1.80%
             |             
            
                22.60
             |           
            
                22.60
             |               
            
                22.60
             |                           
            
                22.60
             | 
            
                22.60
             |                     
            
                5.26
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/1/2008
             | 
            
                +0.40 / +1.83%
             |             
            
                22.20
             |           
            
                22.20
             |               
            
                22.20
             |                           
            
                22.20
             | 
            
                22.20
             |                     
            
                5.17
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2008
             | 
            
                +0.40 / +1.87%
             |             
            
                21.80
             |           
            
                21.80
             |               
            
                21.80
             |                           
            
                21.80
             | 
            
                21.80
             |                     
            
                5.08
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2008
             | 
            
                +0.40 / +1.90%
             |             
            
                21.40
             |           
            
                21.40
             |               
            
                21.40
             |                           
            
                21.40
             | 
            
                21.40
             |                     
            
                4.99
             |                                 
            
                8,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2008
             | 
            
                +0.40 / +1.94%
             |             
            
                20.20
             |           
            
                21.00
             |               
            
                20.20
             |                           
            
                21.00
             | 
            
                21.00
             |                     
            
                4.89
             |                                 
            
                10,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2008
             | 
            
                +1.90 / +10.16%
             |             
            
                20.60
             |           
            
                20.60
             |               
            
                20.50
             |                           
            
                20.60
             | 
            
                20.60
             |                     
            
                4.80
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/25/2008
             | 
            
                -2.10 / -10.10%
             |             
            
                18.80
             |           
            
                18.80
             |               
            
                18.70
             |                           
            
                18.70
             | 
            
                18.70
             |                     
            
                4.36
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2008
             | 
            
                -2.00 / -8.77%
             |             
            
                21.00
             |           
            
                21.00
             |               
            
                20.60
             |                           
            
                20.80
             | 
            
                20.80
             |                     
            
                4.85
             |                                 
            
                4,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2008
             | 
            
                -2.20 / -8.80%
             |             
            
                22.50
             |           
            
                23.00
             |               
            
                22.50
             |                           
            
                22.80
             | 
            
                22.80
             |                     
            
                5.31
             |                                 
            
                3,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2008
             | 
            
                +0.10 / +0.40%
             |             
            
                25.00
             |           
            
                25.00
             |               
            
                25.00
             |                           
            
                25.00
             | 
            
                25.00
             |                     
            
                5.82
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/19/2008
             | 
            
                +1.50 / +6.41%
             |             
            
                25.00
             |           
            
                25.00
             |               
            
                24.90
             |                           
            
                24.90
             | 
            
                24.90
             |                     
            
                5.80
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/18/2008
             | 
            
                -2.20 / -8.59%
             |             
            
                23.40
             |           
            
                24.00
             |               
            
                23.40
             |                           
            
                23.40
             | 
            
                23.40
             |                     
            
                5.45
             |                                 
            
                4,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/17/2008
             | 
            
                -2.30 / -8.24%
             |             
            
                26.50
             |           
            
                26.50
             |               
            
                25.50
             |                           
            
                25.60
             | 
            
                25.60
             |                     
            
                5.96
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/14/2008
             | 
            
                -0.20 / -0.71%
             |             
            
                28.00
             |           
            
                28.30
             |               
            
                27.90
             |                           
            
                27.90
             | 
            
                27.90
             |                     
            
                6.50
             |                                 
            
                3,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/13/2008
             | 
            
                +1.00 / +3.69%
             |             
            
                28.00
             |           
            
                28.50
             |               
            
                27.50
             |                           
            
                28.10
             | 
            
                28.10
             |                     
            
                6.55
             |                                 
            
                1,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/12/2008
             | 
            
                +1.30 / +5.04%
             |             
            
                26.50
             |           
            
                29.30
             |               
            
                26.50
             |                           
            
                27.10
             | 
            
                27.10
             |                     
            
                6.31
             |                                 
            
                1,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/11/2008
             | 
            
                -2.50 / -8.83%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                25.80
             |                           
            
                25.80
             | 
            
                25.80
             |                     
            
                6.01
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/10/2008
             | 
            
                +2.50 / +9.69%
             |             
            
                28.30
             |           
            
                28.30
             |               
            
                28.30
             |                           
            
                28.30
             | 
            
                28.30
             |                     
            
                6.59
             |                                 
            
                21,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/7/2008
             | 
            
                +2.30 / +9.79%
             |             
            
                25.80
             |           
            
                25.80
             |               
            
                25.80
             |                           
            
                25.80
             | 
            
                25.80
             |                     
            
                6.01
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/6/2008
             | 
            
                +2.10 / +9.81%
             |             
            
                23.50
             |           
            
                23.50
             |               
            
                23.50
             |                           
            
                23.50
             | 
            
                23.50
             |                     
            
                5.47
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |