WASHINGTON (AP) — President Donald Trump cancelled House Speaker Nancy Pelosi’s planned trip to Belgium and Afghanistan just hours before the congressional delegation, known as a CODEL, was set to depart. The AP explains:

CAN HE DO THAT?

Yes, and not just because he’s the commander in chief. The military maintains a fleet of converted passenger jets used by the President, Vice President, Cabinet officials and other officials, from the iconic modified Boeing 747s known as “Air Force One” when the president is on board to smaller, modified Gulfstream jets. They’re based at Joint Base Andrews just outside of Washington. The assignment of the jets is at the discretion of the White House Military Office and, ultimately, the President.

HOW IS THIS SUPPOSED TO WORK?