Stress of combat reaches drone crews

Drone crews protect U.S. ground troops by watching over them 24 hours a day from high above. Sitting before video screens thousands of miles from their remote-controlled aircraft, the crews scan for enemy ambushes and possible roadside bombs, while also monitoring what the military calls "patterns of life." Only rarely do drone crews fire on the enemy. The rest of the time, they sit and watch. For hours on end. Day after day. It can get monotonous and, yes, boring. It can also be gut-wrenchin.

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