U.S. Navy Lt. J.G. Joseph Kolaszewski, from 2d Marine Division based out of Camp Lejeune, North Carolina, explains procedures to a nurse with University of Tennessee Health Science Center at the Memphis Community Vaccination Center in Memphis, Tennessee, May 12, 2021. U.S. Northern Command, through U.S. Army North, remains committed to providing continued flexible Department of Defense support to the Federal Emergency Management Agency as part of the whole-of-government response to COVID-19. (U.S. Marine Corps photo by LCpl. Justin T Brown/2dMARDIV) - U.S. Navy Lt. J.G. Joseph Kolaszewski, from 2d Marine Division based out of Camp Lejeune, North Carolina, explains procedures to a nurse with University of Tennessee Health Science Center at the Memphis Community Vaccination Center in Memphis, Tennessee, May 12, 2021.