180117-N-TB177-0212 MANAMA, Bahrain (Jan. 17, 2018) Cmdr. Robert Roadfuss, assigned to Expeditionary Resuscitative Surgical System 19, prepares for a simulated surgery aboard Royal Fleet Auxiliary ship Cardigan Bay during exercise Azraq Serpent 18. The bilateral exercise between the United Kingdom Royal Navy and the U.S. Navy is dedicated to developing interoperability between partners across the medical domain in the U.S. 5th Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kevin J. Steinberg/Released)