| Transaction Date | Filer | Title | Filing | Transaction Type | Shares Traded | Price | Total Held* |
|---|---|---|---|---|---|---|---|
| Jul 28, 2011 | Director | Form 4/A | Other acquisition or disposition | -- | -- | 5,492 | |
| Jun 30, 2011 | Director | Form 4/A | Other acquisition or disposition (describe transaction) | 889 | $69.35 | 22,446 | |
| May 12, 2011 | Director, Chf. Exec. Officer & President | Form 4/A | Other acquisition or disposition (describe transaction) | 9,750 | -- | 317,379 | |
| May 12, 2011 | Director, Chf. Exec. Officer & President | Form 4/A | Other acquisition or disposition (describe transaction) | 9,750 | -- | 142,668 | |
| Mar 30, 2011 | Director | Form 4/A | Other acquisition or disposition | -- | -- | 5,094 | |
| Feb 23, 2011 | Corp. VP & Pres. Shipbuilding | Form 4/A | Other acquisition or disposition | -- | -- | 1,068 | |
| Feb 15, 2011 | Corp. VP & Pres. Shipbuilding | Form 4/A | 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 | 5,485 | $69.14 | 122,115 | |
| Jan 04, 2011 | Director | Form 4/A | Other acquisition or disposition | -- | -- | -- | |
| Dec 31, 2010 | Director | Form 4/A | Other acquisition or disposition (describe transaction) | 2,119 | $64.78 | 26,366 | |
| Sep 30, 2010 | Director | Form 4/A | Other acquisition or disposition (describe transaction) | 548 | $60.63 | 4,628 |
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.