Donald Trump Jr., executive vice president of Development of Trump Organization Inc. and son of Donald Trump, president and chief executive of Trump Organization and 2016 Republican presidential candidate, center, reacts after firing an AR-15 rifle inside a gun range during a campaign event at CrossRoads Shooting Sports in Johnston, Iowa, U.S., on Saturday, Jan. 30, 2016. Trump has overtaken Ted Cruz in the final days before Iowa’s caucuses, with the fate of the race closely tied to the size of Monday evening’s turnout, especially among evangelical voters and those attending for the first time, a Bloomberg Politics/Des Moines Register Iowa Poll shows. (Photographer: Luke Sharrett/Bloomberg via Getty Images)
