Designer: Jen Troyer

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Military pilots must be sharp-eyed, scouting out dangers ahead of them and on all sides. They use the hands of a clock to indicate from which direction trouble is coming. But there remains one spot that is the most vulnerable of all: six o' clock, the position directly behind them. So whether in the air, on the sea or on the ground, when one soldier tells another, "I've got your six," it means, "I'm looking out for you." When you're feeling vulnerable, remember that problems often come from where you least expect them; and, a friend may be your best defense.