Squadron leader briefs his men - ordinary fighter pilots who have volunteered for duty in the RAF aerobatic team: in a national emergency they would be in the front line. The ground crews are equally part of the team. Aircraft take off and perform a loop in Card Five formation - each aircraft is kept in position by eye without instrument aid. Barrel role. Twenty-two aircraft formation loop, a unique aerobatic achievement. View of formation flying from inside the aircraft. "It is skill, practice and experience that makes these aerobatics possible, but the men of Treble One squadron are ordinary pilots of Fighter Command."