SAN DIEGO (Sept. 13, 2021) Hospital Corpsman 2nd Class McKenzie Capps, a Sailor embarked with the Medical Treatment Facility's (MTF) Directorate for Surgical Services aboard the Military Sealift Command (MSC) hospital ship USNS Mercy (T-AH 19) (left), and Capt. Karla Lepore, Mercy's MTF executive officer (right), participate in a resuscitation drill in one of the ship's intensive care units during Mercy Exercise (MERCEX) 21-4, Sept. 13, 2021. MERCEX 21-4 is a week-long, pierside training evolution that culminated in a capstone emergency scenario. Mercy can steam to assist anywhere to provide relief as a symbol of Navy Medicine’s abilities around the world, and must be in a five-day-activation status in order to support missions over the horizon, and be ready, reliable and resilient to support mission commanders. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jake Greenberg)