 A local tactical sniper inside a neighboring building spotted him from a second floor window and snapped a picture. Crooks pulled out the rangefinder and the sniper alerted his team. Then the shooter climbed on an air conditioning unit to reach the roof of the building near the sniper's position. At 5.51 p.m., Pennsylvania State Police notified the Secret Service there was a suspicious person on the premises. One minute later, that was relayed to counter sniper teams above Trump.