 It incorporates fighters from World War II, the Vietnam War, the Korean War and other conflicts in which the USAF has been involved.The USAF Heritage Flight formation will normally consist of two or more aircraft representing the different eras of operations, making three passes past the spectators.There will be one pass each from the right and left and then a final pass from behind the crowd with the aircraft performing a separation maneuver to create separation between the aircraft followed a few seconds later by a single simultaneous aileron roll by all the aircraft in the flight.