S hocking new footage shows local cops and a Secret Service agent standing over the dead body of would-be Donald Trump ...

Thomas Matthew Crooks Was Spotted On A Rooftop Ahead ... down the sloped roof as officers search for a device near Crooks' body. "Beaver County snipers seen him, sent the pictures out.

Thomas Matthew Crooks pictured in his high school year book ... Footage later shows armed officers approaching a body on the roof of the building.

Thomas Matthew Crooks pictured in his high school year book ... Footage later shows armed officers approaching a body on the roof of the building. A United Airlines spokesperson says it's unclear ...