U.S. Marine Corps Cpl. Nahla Beard, an Air Traffic Controller with Headquarters and Headquarters Squadron, attempts a Guinness world record at Marine Corps Air Station Iwakuni, Japan, August 7, 2021. Cpl. Beard won the Guinness world record for most chest-to-ground burpees in one minute. - U.S. Marine Corps Cpl. Nahla Beard, an Air Traffic Controller with Headquarters and Headquarters Squadron, attempts a Guinness world record at Marine Corps Air Station Iwakuni, Japan, August 7, 2021. Cpl. Beard won the Guinness world record for most chest-to-ground burpees in one minute.