I had radio watch. I usually did four hours a night. I wrote letters by flashlight. The letters all had a box in the lower left corner with tick-marks that I slashed into the notebook paper every time I saw a falling star. Mars marched angrily across the Iraqi sky. "ROAD KNIGHT ONE . . . THIS IS BLACK HORSE . . .RADIO CHECK, OVER." came a crackling voice on the radio. We were supposed to do radio checks every hour, but it...