I knew the term was a military term but had not had the occasion to hear it in use since its been many many years since my father was in the military.
So I googled it and found the following which is very cool. So if you're like me and need to bone up on your lingo...enjoy. If you are in the military...then "check six" back to ya...we've gotcha covered on SingleDivers.com!
The Meaning of "Check-Six"
The term "Check-Six" has its origin in common direction-telling methods (as seen in films like Indiana Jones and the Last Crusade, or Twelve O'clock High). For example, "I see an airplane at 11 O'clock"... referring to the bogey (another aircraft) being to the front and slightly left of the aircraft ("12 O'clock" being directly ahead). Using this technique, "6 O'clock" is directly to the rear of your aircraft (and is also a very vulnerable position to be attacked from), or otherwise your posterior. Thus, the term, "Check your Six O'Clock," or as shorten for brevity-sake to "Check-Six," means to watch your rear.
For all of us at SingleDivers.com, we want you to know we've got your back both above and below the watery blue!
