| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Feb 21, 2007 | Corp. VP, Communications | 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 | 2,940 | $75.29 | 43,040 | |
| Feb 21, 2007 | Corp. VP, Communications | Form 4 | Other acquisition or disposition (describe transaction) | 2,530 | $75.29 | 45,570 | |
| Feb 21, 2007 | Corp. VP & Pres., Info. 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 | 5,224 | $75.29 | 52,276 | |
| Feb 21, 2007 | Corp. VP & Pres., Info. Tech. | Form 4 | Other acquisition or disposition (describe transaction) | 4,138 | $75.29 | 56,414 | |
| Feb 21, 2007 | Corp. VP & Pres. Newport News | 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 | 3,696 | $75.29 | 53,490 | |
| Feb 21, 2007 | Corp. VP & Pres. Newport News | Form 4 | Other acquisition or disposition (describe transaction) | 3,402 | $75.29 | 56,892 | |
| Feb 21, 2007 | Corp VP & Pres, Electron. 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 | 3,845 | $75.29 | 40,155 | |
| Feb 21, 2007 | Corp VP & Pres, Electron. Sys. | Form 4 | Other acquisition or disposition (describe transaction) | 3,178 | $75.29 | 43,333 | |
| Feb 21, 2007 | Corp. VP & Treasurer | 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 | 1,787 | $75.29 | 38,317 | |
| Feb 21, 2007 | Corp. VP & Treasurer | Form 4 | Other acquisition or disposition (describe transaction) | 1,607 | $75.29 | 39,924 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.