anti-aircraft

“Special lamps were provided for working during the blackout, and an anti-aircraft gun, manned by the R.A.O.C., was mounted on the coal depot line.”

“Truth's ships are clustered above the excavation site. And his infantry has deployed anti-aircraft batteries around the perimeter.”

“I am blacking out—ease the stick forward slightly—the sky is clear again—I turn out over water—reverse turn—there are antiaircraft on the island below—I reverse again—and again.”