U.S. Coast Guard Chief Petty Officer Thomas Morgan, maritime enforcement specialist, assigned to Port Security Unit 311, instructs Petty Officer 2nd Class Manuela Adame, engineman, on operating the M203 grenade launcher during a live-fire exercise at the Maritime Expeditionary Security Squadron 1 inaugural training school, Shark Tank 2010. Shark Tank is a new series of training exercises designed to hone and teach expeditionary warfare skills.