Eric Paddock, brother of Las Vegas shooting suspect Stephen Paddock, says he never had any indication his brother would turn violent. Eric says Stephen liked to "hang out," gambled a bit, and had never shown any religious or political inclination.

Eric repeatedly asked reporters to find out how Stephen, who he says until recently had only owned a few handguns and one rifle, was able to acquire automatic weapons.

Go Deeper: WaPo on Stephen Paddock's "quiet, retired life" ; Live updates on the shooting ; Deadliest mass shootings in modern U.S. history