| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 21, 2007 | Corp VP & Pres Mission Systems | Form 4 | Other acquisition or disposition (describe transaction) | 3,334 | $75.29 | 48,623 | |
| Feb 21, 2007 | Pres. & Chf. Financial 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 | 8,350 | $75.29 | 132,650 | |
| Feb 21, 2007 | Pres. & Chf. Financial Officer | Form 4 | Other acquisition or disposition (describe transaction) | 5,825 | $75.29 | 138,475 | |
| Feb 21, 2007 | Corp VP & Pres Technical Servs | 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 | 2,424 | $75.29 | 33,576 | |
| Feb 21, 2007 | Corp VP & Pres Technical Servs | Form 4 | Other acquisition or disposition (describe transaction) | 2,688 | $75.29 | 36,264 | |
| Feb 21, 2007 | Corporate VP, Controller & CAO | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 5,000 | $75.29 | 20,500 | |
| Feb 21, 2007 | Corp.VP, Government Relations | 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 | 3,320 | $75.29 | 61,073 | |
| Feb 21, 2007 | Corp.VP, Government Relations | Form 4 | Other acquisition or disposition (describe transaction) | 3,340 | $75.29 | 64,413 | |
| Feb 21, 2007 | 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 | 4,372 | $75.29 | 42,628 | |
| Feb 21, 2007 | Corp. VP & Pres. Space Tech. | Form 4 | Other acquisition or disposition (describe transaction) | 3,314 | $75.29 | 45,942 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.