Flying formation you keep your eyes on the leader, the Thunderbirds lost all four T-38 when in a formation loop during a practice session, our Oz air force also lost four Vampire two seat trainer aircraft while practicing for an air display, the four aircraft struck the ground almost simultaneously in the final stages of completing a low level formation barrel roll, all six personnel died. Accident report of the latter,
www.adf-serials.com.au/dfs/The-Red-Sales.pdf
Formation flying requires great concentration on control and positioning. It is essential that all formation members rely implicitly on the leader for altitude, attitude and safety considerations