>Who carries the football?
It is held by an aide-de-camp.
>Who coordinates the roster?
The President has five military aides, one from each of the armed services. The President's aides from the Army, Marine Corps and Air Force are majors or lieutenant colonels, and the aides from the Navy and Coast Guard are lieutenant commanders or commanders. One of their major roles is to hold the Presidential emergency satchel. In addition to the five permanent aides-de-camp, there are some 40–45 military social aides holding more junior ranks from lieutenant to major. Their appointment is temporary and part-time, serving for perhaps two to four afternoons a month as required, for social purposes such as gatherings hosted at the White House