| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 29, 2008 | Corp. VP & Pres. Shipbuilding | Form 4 | Other acquisition or disposition | -- | -- | 979 | |
| Feb 29, 2008 | Corp. VP & Treasurer | Form 4 | Other acquisition or disposition | -- | -- | 730 | |
| Feb 29, 2008 | Director, Chief Executive Officer | Form 4 | Other acquisition or disposition | -- | -- | 190,288 | |
| Feb 29, 2008 | Corp. VP & General Counsel | Form 4 | Other acquisition or disposition | -- | -- | 3,689 | |
| Feb 29, 2008 | Corp VP & Chf HR & Adm Ofcr | Form 4 | Other acquisition or disposition | -- | -- | 2,882 | |
| Feb 28, 2008 | Pres. & Chf. Operating Officer | Form 4 | Bona fide gift | 36,763 | -- | 135,600 | |
| Feb 28, 2008 | Pres. & Chf. Operating Officer | Form 4 | Bona fide gift | 36,763 | -- | 99,523 | |
| Feb 27, 2008 | Corp VP & Pres Mission Systems | Form 4 | Other acquisition or disposition | -- | -- | 5,466 | |
| Feb 27, 2008 | Corp VP & Pres Mission Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 8,150 | $80.82 | 75,640 | |
| Feb 27, 2008 | Corp VP & Pres Mission Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 37,200 | -- | 37,200 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.