171019-N-AJ467-052 ATLANTIC OCEAN (Oct. 19, 2017) Machinist's Mate 1st Class Robert Denoya teaches Machinist's Mate Fireman Apprentice Tyler Prince about line shaft bearings and flow characteristics in shaft alley aboard the aircraft carrier USS George H.W. Bush (CVN 77). The George H.W. Bush Carrier Strike Group is underway completing sustainment requirements as part of exercise Bold Alligator 17. (U.S. Navy photo by Mass Communication Specialist Seaman Darien Weigel/Released)