Eerie photo of Trump shooter's bike left at rally site as expert questions why 'flying squad' wasn't mobilized

BUTLER, Pa. — A lone bike cloaked by a tree's shade near a Pennsylvania manufacturing facility is a haunting reminder of a gunman's hail of gunfire that nearly assassinated a former president.

The shooter, Thomas Matthew Crooks, rode the bicycle to Donald Trump's rally in Butler and ditched it before he opened fire from a roof about 150 yards from where the former president spoke to the crowd of thousands on Saturday, The New York Post reported.  

Crooks left the bike behind in plain...