Professional Apprenticeship Career Tract (PACT) Seaman Justin Estupinan, from Pompano Beach, Fla., serves as a signalman aboard Arleigh Burke-class guided-missile destroyer USS Mitscher (DDG 57) during a replenishment-at-sea with the Supply-class fast combat support ship USNS Supply (T-AOE-6), Feb. 26, 2022.