 Specifically, the Target Acquisition System operator issued the command "arm and tune", terminology the console operators understood to require arming of the missiles in preparation for actual firing.The officers supervising the drill did not realize that "arm and tune" signified a live firing and ignored two separate requests from the missile system operator to clarify whether the launch order was an exercise.As a result, shortly after midnight on the morning of 2 October, "Saratoga" fired two Sea Sparrow missiles at "Muavenet".