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Photo by: ANDREW S. GERACI

Metro Transit Officers, from Washington D.C., use upper body strength to cross the monkey bars while wearing gas masks at the Iron Team Endurance Competition in Laurel, MD., Wednesday, September 26, 2012. The competition is hosted by the Prince George's County Police where teams from all over the east coast, including the Marines, compete in a grueling physical endurance challenge.(Andrew S. Geraci/The Washington Times)

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