Sgt. Aaron Gardner, a training clerk with Headquarters and Headquarters Squadron, Marine Corps Air Station Miramar, Calif., performs a handstand push up while warming up during the Orange County Throwdown at the Orange County Fair Grounds, Jan. 11. Gardner pushed himself through each grueling repetition and, despite an injury to one of his abdominal muscles early the second day, finished 20th. - Sgt. Aaron Gardner, a training clerk with Headquarters and Headquarters Squadron, Marine Corps Air Station Miramar, Calif., performs a handstand push up while warming up during the Orange County Throwdown at the Orange County Fair Grounds, Jan. 11. Gardner pushed himself through each grueling repetition and, despite an injury to one of his abdominal muscles early the second day, finished 20th.