Chilling footage appears to show Thomas Crooks casually walking through crowd two hours before attempted Trump assassination

Unsettling new footage appears to show attempted Donald Trump assassin Thomas Crooks casually strolling through the Butler, Pa., rally crowd less than two hours before he unloaded a rifle at the former president. In the clip, filmed by employees of the clothing company Iron Clad USA, Crooks is seen walking through a row of vendors...