常風行動
At 07:00, Major General Homer D. Smith, the defense attache, advised Ambassador Martin that fixed wing evacuations should cease and that Operation Frequent Wind, the helicopter evacuation of U.S. personnel and at-risk Vietnamese should commence. Ambassador Martin refused to accept General Smith's recommendation and instead insisted on visiting Tan Son Nhut to survey the situation for himself. Finally at 10:51 the order was given to commence Operation Frequent Wind, however due to confusion in the chain of command General Carey did not receive the execute order until 12:15.