 and how a 20-year-old man managed to access a nearby rooftop to fire shots that injured the former president. U.S. national security officials said the Secret Service and Trump campaign were made aware of the threat before Saturday's rally. Secret Service learned of the increased threat from this threat stream, the official told CNN. NSC directly contacted USSS at a senior level to be absolutely sure they continue to track the latest reporting. USSS shared this information with a detailed lead.