The White House Military Office (WHMO) provides military support for White House functions, including food service, Presidential transportation, medical support and emergency medical services, and hospitality services. The office oversees policy related to WHMO functions and Department of Defense assets and ensures that White House requirements are met with the highest standards of quality. The WHMO Director oversees all military operations aboard Air Force One on Presidential missions worldwide. The Deputy Director of the White House Military Office focuses primarily on the day-to-day support of the WHMO.

The WHMO's operational units are the most visible part 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, and the White House Transportation Agency. To assure proper coordination and integration, the WHMO also includes support elements such as operations; policy, plans, and requirements; information and technology management; financial management and comptroller; WHMO counsel; and security. Together, WHMO entities provide essential service to the President and help maintain the continuity of the Presidency.