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Every Friday at five o'clock on the dot, a inept North Korean pilot tries to bomb the 4077th's ammunition dump. Fortunately, "5 O'Clock Charlie" apparently can't hit the broad side of a barn, but that doesn't stop gung-ho Frank Burns (Larry Linville) from trying to requistion an anti-aircraft gun. Realizing that the combination of Frank and a weapon is potentially more dangerous than any enemy pilot, Hawkeye (Alan Alda) and Trapper (Wayne Rogers) cook up a scheme to remove the threat -- by removing "Charlie"'s primary target. "5 O'Clock Charlie" first aired on September 22, 1973.