Federal investigators probe whether Trump shooter Thomas Matthew Crooks flew drone over rally site Fox NewsGunman in Trump rally attack flew drone over rally site in advance of event, official says The Associated PressInvestigators believe Trump’s would-be assassin flew a drone over rally site on the day of the shooting CNNGunman at Trump rally flew drone over fairgrounds earlier on day of shootings The Guardian USTrump rally shooter’s duffel bag and range finder first sparked suspicions, sources say ABC News