Las Vegas Strip mass murderer Stephen Paddock used his Mandalay Bay hotel room to spray massive aviation fuel tanks with bullets Sunday night, a knowledgeable source told the Las Vegas Review-Journal. The bullets left holes, but did not penetrate the two circular white tanks, sparing the nearby Route 91 Harvest country music festival from a potentially massive explosion, the source said Wednesday. The tanks are roughly 1,100 feet from the concert site, where Paddock killed 58 people and wounded almost 500.