Check your six
Look behind you. (background) Based on the position of numbers on a clock. An aviation term, it refers to the relative location of an aircraft with 12:00 being the nose.
Look behind you. (background) Based on the position of numbers on a clock. An aviation term, it refers to the relative location of an aircraft with 12:00 being the nose.
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DevilDogCorps.com is an unofficial online dictionary of terms and acronyms commonly used within the United States Marine Corps.