Col. Chad Koenig, commander of the Walter Reed Army Institute of Research, shoots a water gun at WRAIR Soldiers to hinder them from knocking him in the dunk tank, in Silver Spring, Maryland, Aug 12, 2022. WRAIR held its annual organizational day, where hundreds of people turned out to dunk the command team in water, play basketball, eat good food and sweat it out with Zumba at Forest Glen Annex. (U.S. Army photo by Tyra Breaux/Released)