As Las Vegas police continue to search for a motive behind the deadliest mass shooting in American history, details continue to surface about the past of the 64-year-old shooting suspect. A spokesperson for the Office of Personnel Management told The Associated Press on Tuesday that Stephen Paddock worked as an agent for the Internal Revenue Service in its auditing department and was also a letter carrier for the U.S. Postal Service. The spokesperson said Paddock worked as a mailman for the USPS for two years from 1976-1978 and then worked for the IRS for six years until 1984. After that,...