Mason Short, 10, glances up at his father, Le (CQ), from Kountze, as he got a closer look at a shotgun at the Mossberg booth during NRA Youth Day events at the National Rifle Association's 142 Annual Meetings and Exhibits in the George R. Brown Convention Center Sunday, May 5, 2013, in Houston.  More than 70,000 are expected to attend the event with more than 500 exhibitors represented. ( Johnny Hanson / Houston Chronicle ) Photo: Houston Chronicle
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