US aircraft in the Vietnam War were often outclassed by MiG fighters 'clever dogfighting techniques, so the Americans studied communist air force tactics and drew up "hypothetical enemy" training procedures to givetheir airmen more experience in dealing with the enemy through practical training at the "Top Gun" air base.
越戰期間，美國空軍遭遇米格機纏鬥，因他們靈活狡詐的戰術，吃了不少虧，因此開始研擬共產國家空軍的戰法，並創立一套「假想敵」的對抗演練方式，在「TOP GUN」基地中實施訓練，以增進飛行員的對敵經驗。