Shares of defense contractor Lockheed Martin (LMT 3.51%) rallied 3.5% on Friday, even though the S&P 500 (^GSPC -1.13%) was down 1.1%.Lockheed and major defense contractors were up today after Israel struck Iran this morning, raising the prospect of a regional war. That sent oil prices up and most stocks down; however, the prospect that Israel or the U.S. may buy more equipment from Lockheed sent the stock of the leading defense contractor upwards.Israel and Lockheed have historyLockheed Martin's stock actu ...