USAF Thunderbirds #1-4 perform the Diamond Loop on takeoff. The four F-16 'Falcon' Diamond formation is flown by Lt. Colonel John Caldwell (#1 Commander/Leader), Major Will Graeff (#2 Left Wing), Captain Michael Brewer (#3 Right Wing), and Major Whit Collins (#4 Slot).

Diamond: Historically, as Thunderbirds 1 through 4 lift off, the slot aircraft slips immediately into position behind 1 to create the signature Diamond formation. Thanks to the 2009 upgrade to the Block 52, the Diamond now has more than enough thrust to continue to climb straight up into their first maneuver, the Diamond Loop. -[wiki]

Photo by Craig on Sunday, July 21, 2019 at the Fargo AirSho.