| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 25, 2008 | Corporate Vice President | Form 4 | Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3 | 16,360 | $81.00 | 124,209 | |
| Feb 25, 2008 | Director, Chief Executive Officer | Form 4 | Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3 | 68,167 | $81.00 | 359,808 | |
| Feb 25, 2008 | Corp VP & Pres Elec Miss. Sys. | Form 4 | Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3 | 8,448 | $81.00 | 89,192 | |
| Feb 25, 2008 | Corp. VP & General Counsel | Form 4 | Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3 | 7,902 | $81.00 | 114,407 | |
| Feb 25, 2008 | Corp VP & Chf HR & Adm Ofcr | Form 4 | Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3 | 4,117 | $81.00 | 45,480 | |
| Feb 22, 2008 | Corp VP & Pres Mission Systems | Form 4 | Other acquisition or disposition | -- | -- | 5,466 | |
| Feb 22, 2008 | Pres. & Chf. Operating Officer | Form 4 | Other acquisition or disposition | -- | -- | 62,760 | |
| Feb 22, 2008 | Pres. & Chf. Operating Officer | Form 4 | Other acquisition or disposition | -- | -- | 4,361 | |
| Feb 22, 2008 | Corp. VP & Pres. Info. Tech. | Form 4 | Other acquisition or disposition | -- | -- | 1,090 | |
| Feb 22, 2008 | Corp. VP & Pres. Info. Tech. | Form 4 | Other acquisition or disposition | -- | -- | 7,606 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.