SSgt. Kevin Porter, a recruiter with Recruiting Sub-Station Oxford Valley, times Bullis High School track athlete Cierra Pyles on her flexed-arm hang at the 2017 Penn Relays as Malana Johnson, also on the Bullis High School track team, watches, in Philadelphia, Pennsylvania, April 29, 2017. Throughout the three day event, the Marines challenged athletes from all over the world to pull-ups, push-ups, and sit-ups.

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