The seal on his shirt reads WHMO Operations across the top and The White House on the bottom.

From Wiki "The WHMO is headed by a Director who oversees the policies involving Department of Defense assets. They ensures that White House requirements are clearly communicated to the WHMO Directorates and meet the highest standards of presidential quality. The WHMO's operational units are the most visible element of the WHMO's support to the President. The WHMO units include the: White House Communications Agency, Presidential Airlift Group, White House Medical Unit, Camp David, Marine Helicopter Squadron One, Presidential Food Service, White House Transportation Agency, White House Social Aides,[4] and the Military Aides to the President. "

Oddly enough, the director that Xiden installed in 2021, Maju Varghese, left his position as director in January 2022 and it doesn't look like anyone has filled his position, in either an acting or full time role.