Why did the Key Solution neglect to shield Trump from being actually shot?

.IT WAS ACTUALLY A remarkable lapse in surveillance: how did a sharpshooter install an unprotected roof along with a straight line of vision to Donald Trump, who was actually standing a plain 150m away? Based upon video footage, it resembles Mr Trump was actually millimetres from death– conserved by a privileged turn of the head an immediate before Thomas Matthew Crooks, a 20-year-old from Pennsylvania, shot at him. Scoundrels eliminated a rally-goer before being fatally fired themself.