Security service officials had would-be assassin Thomas Matthew Crooks on their radar for almost an hour before he shot Donald Trump, a new image reveals. A photograph showing the 20-year-old sniper appearing to crawl on the ground while scouring the area was circulated to law enforcement as a suspicious sighting at 5:30pm the Butler, Pennsylvania rally on July 14. Around 6.10pm, Crooks took up a position on the slanted roof and shot at Trump from a distance of around 165 yards, wounding him in the ear and killing retired fire chief Corey Comperatore. Two more newly-released images also show a...