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New footage shows Thomas Crooks suspiciously walking around before trying to assassinate Donald Trump.
A new report claims Crooks was spotted with his rangefinder by the USSS *3 hours* before the rally.
Crooks was first noticed at 3 pm on Saturday in the security screening area with his rangefinder.
The USSS kept an eye on him but lost him when he is believed to have gone to his car to retrieve his rifle.
About 40 minutes before the shots rang out, Crooks was spotted again by Secret Service which is when the last known photograph of him alive was taken.