150525-N-VC236-224 GULF OF OMAN - Machinist's Mate Fireman Carlos Aguirre, from Houston, participates in the 2015 "Murph" challenge aboard the guided-missile destroyer USS Farragut. The "Murph" challenge is named after Medal of Honor recipient Lt. Michael Murphy and consists of his personal workout: completing a two-mile run, 100 pull-ups, 200 pushups and 300 squats with a 25-pound vest in the fastest time possible.