| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 28, 2007 | Corp VP & Pres Mission Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 40,000 | $71.85 | 40,000 | |
| Feb 28, 2007 | Pres. & Chf. Financial Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 32,000 | $71.85 | 170,475 | |
| Feb 28, 2007 | Pres. & Chf. Financial Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 64,000 | $71.85 | 64,000 | |
| Feb 28, 2007 | Corp VP & Pres Technical Servs | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 16,000 | $71.85 | 52,264 | |
| Feb 28, 2007 | Corp VP & Pres Technical Servs | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 32,000 | $71.85 | 32,000 | |
| Feb 28, 2007 | Director | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 3,000 | $42.56 | 13,205 | |
| Feb 28, 2007 | Director | 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 | 1,775 | $71.91 | 11,430 | |
| Feb 28, 2007 | Director | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 3,000 | -- | -- | |
| Feb 28, 2007 | Corporate VP, Controller & CAO | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 10,000 | $71.85 | 30,500 | |
| Feb 28, 2007 | Corp.VP, Government Relations | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 14,000 | $71.85 | 78,413 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.