Navy Senior Airman Derek Harper simulates being a casualty during exercise Azraq Serpent 18 on Royal Fleet Auxiliary ship Cardigan Bay in Manama, Bahrain, Jan. 15, 2018. The bilateral exercise between the U.K. Royal Navy and the U.S. Navy is dedicated to developing interoperability across the medical domain in the U.S. 5th Fleet area of operations. Navy photo by Petty Officer 2nd Class Kevin J. Steinberg