| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 25, 2008 | Corp VP & Pres Integrated 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 | 2,906 | $81.00 | 31,566 | |
| Feb 25, 2008 | Corporate VP, Controller & CAO | 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 | 4,345 | $81.00 | 29,830 | |
| Feb 25, 2008 | Corp.VP, Bus Dev & Gov. Rel. | 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 | 6,915 | $81.00 | 77,378 | |
| Feb 25, 2008 | Corp. VP & Pres. Space Tech. | 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 | 10,412 | $81.00 | 59,370 | |
| Feb 25, 2008 | Corp. VP & Pres. Info. Tech. | 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 | 1,727 | $81.00 | 19,387 | |
| Feb 25, 2008 | Corp. VP, Communications | 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 | 4,576 | $81.00 | 52,914 | |
| 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 | 15,401 | $81.00 | 70,773 | |
| Feb 25, 2008 | Corp. VP & Pres. Shipbuilding | 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 | 12,155 | $81.00 | 85,037 | |
| Feb 25, 2008 | Corp VP & Pres, Electron. 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 | 8,768 | $81.00 | 59,327 | |
| Feb 25, 2008 | Corp. VP & Treasurer | 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 | 958 | $81.00 | 12,681 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.