Ship's Serviceman 3rd Class Alain Hernandez, from Miami, applies a splint to Information Systems Technician 2nd Class Daniel Smith, from Covington, Georgia, during a mass casualty drill aboard USS Donald Cook (DDG 75).

ROTA, Spain (May. 04, 2016) Ship's Serviceman 3rd Class Alain Hernandez, from Miami, applies a splint to Information Systems Technician 2nd Class Daniel Smith, from Covington, Georgia, during a mass casualty drill aboard USS Donald Cook (DDG 75). Donald Cook, an Arleigh Burke-class guided-missile destroyer, forward deployed to Rota, Spain is conducting a routine patrol in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo by Mass Communication Specialist 2nd Class Mat Murch) File# 160504-N-TC720-032