190526-N-JT254-0003 PACIFIC OCEAN (May 26, 2019) Lt. Cmdr. James Wallace, surgeon for the aircraft carrier USS Nimitz (CVN 68), teaches a group of hospital corpsman how to suture in the ship's medical department. Nimitz is currently underway conducting routine operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Christopher R. Jahnke/Released)