A video posted to social media shows the moment Secret Service snipers returned fire at the shooter who attempted to assassinate former US President Donald Trump during a campaign rally in Pennsylvania on Saturday.
In the video, two Secret Service agents can be seen lying on the roof of a building behind the rally as Trump addressed the crowd.
The agents appeared to notice the would-be assassin right before he opened fire. The shooter, who was later identified as 20-year-old Thomas Matthew Crooks, fired off multiple rounds before he was shot and killed.
Trump was struck in the ear and hospitalized for a short while. At least two bystanders were struck, one of whom was killed.