epa06245155 A handout photo made available by the Las Vegas Metropolitan Police Department (LVMPD) shows US President Donald J. Trump (R) and First Lady Melania Trump (2-R) meeting with police officers in Las Vegas, Nevada, USA, 04 October 2017. At least 59 people were killed and more than 500 were injured in a mass shooting in Las Vegas on 01 October 2017, the largest in modern US history. EPA/LVMPD HANDOUT -- BEST QUALITY AVAILABLE -- HANDOUT EDITORIAL USE ONLY/NO SALES