| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 25, 2008 | Corp VP & Pres Elec Miss. 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 | 8,448 | $81.00 | 89,192 | |
| Feb 20, 2008 | Corp VP & Pres Elec Miss. Sys. | Form 4 | Other acquisition or disposition (describe transaction) | 7,105 | $81.00 | 97,640 | |
| Jan 15, 2008 | Corp. VP & Pres. Ship Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 12,500 | $81.10 | 90,544 | |
| Feb 28, 2007 | Corp. VP & Pres. Ship Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 16,000 | $71.85 | 78,044 | |
| Feb 28, 2007 | Corp. VP & Pres. Ship Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 32,000 | $71.85 | 32,000 | |
| Feb 21, 2007 | Corp. VP & Pres. Ship Systems | 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 | 3,899 | $75.29 | 58,493 | |
| Feb 21, 2007 | Corp. VP & Pres. Ship Systems | Form 4 | Other acquisition or disposition (describe transaction) | 3,551 | $75.29 | 62,044 | |
| Feb 15, 2006 | Corp. VP & Pres. Ship Systems | 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 | 1,887 | $65.10 | 40,335 | |
| Feb 15, 2006 | Corp. VP & Pres. Ship Systems | Form 4 | Other acquisition or disposition (describe transaction) | 2,057 | $65.10 | 42,392 | |
| Feb 15, 2006 | Corp. VP & Pres. Ship Systems | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 20,000 | $65.10 | 62,392 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.