U.S. Navy Construction Electrician 2nd Class Bryan Kroll supervises Equipment Operator Constructionman Ben Morrow while he operates a bulldozer to dig a grease pit for galley waste during Operation Bearing Duel at Fort Hunter Liggett, Calif., on Aug. 17, 2006. The three-week training is designed to exercise unit command and control and certify battalions for possible future deployments and contingency operations. (U.S. Navy photo by Mass Communication SPECIALIST 1ST Class Carmichael Yepez) (Released)