180515-N-UX013-0047 ATLANTIC OCEAN (May 15, 2018) Lt. Akneca Brumfield, left, teaches Hospital Corpsman 3rd Class Kazia McCabe, right, how to chart the vitals of a simulated patient during a mass casualty drill aboard the U.S. Navy hospital ship USNS Comfort (T-AH 20) in support of Comfort Exercise (COMFEX) 2018. COMFEX is an advanced-phase training exercise designed to prepare and test the capabilities of the ship’s medical professionals, ensuring readiness to rapidly answer any emergent crisis. (U.S. Navy photo by Mass Communication Specialist 3rd Class Jonathan Clay/Released)