the DH Chipmunk, the aircraft type he flew around the world as part of operation Northern Venture. Memorials Permanent memorial sculptures depicting the missing man aerial formation exist at Randolph Air Force Base (Missing Man Monument, 1977, Mark Pritchett) in San Antonio, Texas, Joint Base Pearl Harbor–Hickam (Missing Man Memorial, 1995) in Honolulu, Hawaii, and Valor Park (Missing Man Formation, 2000) near the National Museum of the United States Air Force in Dayton, Ohio. Outside the United States, a missing man memorial was dedicated at the Militaire Luchtvaart Museum (, 2004, Leendert Verboom) near Soesterberg Air Base to commemorate the 21 June 1944 crash of the Consolidated B-24 Liberator "Connie" following a bombing raid in Germany; it was moved to the museum near Rijsenhout in 2014. Motorsport The missing man formation is also used in various types of motorsport to commemorate the death of a driver, rider, or official. In case of a rolling start, during the pace laps before the race begins, the driver in the pole position drops back a row into the second row and the field paces with no vehicle in the lead position. This was done during the 2001 Dura Lube 400 at Rockingham by Jeff Gordon, in honor of Dale Earnhardt following his death the week before at the Daytona 500. Similarly, the pole position on a starting grid can be left empty for a standing start. After the deaths of Ayrton Senna and Roland Ratzenberger in the 1994 San Marino Grand Prix, in the next race in Monaco, the first two grid positions were left empty and painted with the colors of their home countries' flags - Brazil and Austria, respectively. American football The missing man formation has been frequently used by American football teams to commemorate the death of a teammate. Typically, on the first play in which the fallen player would have appeared, the team takes the field with only ten players, leaving his position in the formation open. The team will usually then take a delay of game, with their opponent declining the penalty. On September 1, 2007 the USC Trojans college football team performed the missing man. After scoring their first touchdown, USC lined up for the extra point without a kicker in tribute to teammate Mario Danelo who had died just after the 2006 season. On December 2, 2007 the NFL's Washington Redskins (now known as the Washington