A little bit of history behind Angel Flights:
Angel Flights are the U.S. Air Force C-130 airplanes used to fly home our fallen soldiers, sailors, marines, and airmen. Angel Flight is their radio/aircraft call sign. In addition, Angel Flights have top (number one) priority in U.S. airspace over other military flights — as you heard the towers say “number 1 for landing/takeoff.”
The term “heroes” is another term frequently used in the video in reference to our fallen warriors.