 carrying a range finder. Then he disappeared and came back with a backpack. I know, why didn't they do anything about that? They didn't search or anything? The officer managed to take a photograph of the shooter and radioed the sightings to his command center. But the suspected shooter, Thomas Matthew Crooks, was reportedly able to scale the roof through an air conditioning unit. Local law enforcement officials, cited by the reports, blamed a lack of manpower.