
Since the shooting, testimonies from law enforcement officials before House and Senate panels have pointed to critical spots near the rally that could have allowed countersnipers to spot the gunman before he fired eight shots, including one that grazed Mr. Trump’s ear.
The gunman, Thomas Matthew Crooks, 20, managed to climb up on top of an AGR International warehouse, walk across its roof and begin shooting — all while evading countersnipers. There were four locations where countersnipers were stationed near the rally, according to Beaver County planning documents. Law enforcement officials have since testified that higher-elevation positions should have been secured.
