"Gen. David Petraeus, left, does the ""22 Pushup Challenge"" with Wes Moore, executive producer and host of PBS's ""Coming Back with Wes Moore,"" right, at 10:45 A.M. on Thursday, August 18, 2016, in the Amphitheater.The 22 Pushup Challenge is designed to raise awareness of suicides by military veterans. Moore asked Gen. Petraeus how many pushups he could do, and Gen. Petraeus responded, ""One more than you!"" Photo by Carolyn Brown."
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