An image posted on Facebook by a man who claims he served Stephen Paddock room service shows that the gunman was with a guest during his time at the Mandalay Bay hotel four days before the massacre took place. The receipt shows an employee named Antonio served two guests an “IRD_MB,” which means “In Room Dining, Mandalay Bay.” The table number is “32135” – which equates to Paddock’s room number (135) on the 32nd floor. Paddock ordered a burger, a bagel with cream cheese, a potato soup, one bottle of water and two Pepsis, suggesting that there was another person...