| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 22, 2008 | Corp. VP & Pres. Shipbuilding | Form 4 | Other acquisition or disposition | -- | -- | 979 | |
| Feb 22, 2008 | Corp. VP & Treasurer | Form 4 | Other acquisition or disposition | -- | -- | 730 | |
| Feb 22, 2008 | Corporate Vice President | Form 4 | Other acquisition or disposition | -- | -- | 1,163 | |
| Feb 22, 2008 | Director, Chief Executive Officer | Form 4 | Other acquisition or disposition | -- | -- | 190,288 | |
| Feb 22, 2008 | Corp. VP & General Counsel | Form 4 | Other acquisition or disposition | -- | -- | 3,689 | |
| Feb 22, 2008 | Corp VP & Chf HR & Adm Ofcr | Form 4 | Other acquisition or disposition | -- | -- | 2,882 | |
| Feb 21, 2008 | Pres. & Chf. Operating Officer | Form 4 | Other acquisition or disposition | -- | -- | 58,474 | |
| Feb 21, 2008 | Pres. & Chf. Operating Officer | Form 4 | Other acquisition or disposition | -- | -- | 4,361 | |
| Feb 21, 2008 | Corporate Vice President | Form 4 | Other acquisition or disposition | -- | -- | 1,163 | |
| Feb 20, 2008 | Corp VP & Pres Mission Systems | Form 4 | Other acquisition or disposition (describe transaction) | 6,909 | $81.00 | 76,022 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.