Pfc. Scott Wilson, a member of the 569th Engineer Detachment (Dive), sits with Spc. Matthew Schlosser, who is the back up diver during a scenario of exercise Deep Blue in the Persian Gulf, July 26. Many of the scenarios test the divers on things that can go wrong from equipment errors to soldier injuries, explained 1st Sgt. Earnest L. Vance, master diver of the 569th.