Nathan, who reportedly lives just a block from the Virginia baseball field, was walking his dogs when he encountered the incident.
Nathan was clearly panicked as he filmed the shooting, as the camera was shifted crazily every which way. At one point, it would appear that Nathan hit the ground, as the vantage point appears to be from near ground level.
Around the 2:35 mark, Nathan can be heard yelling, "Hey, is that guy OK up there?"
The video gives a candid look at the scene of the shooting which left four people injured, including Rep. Steve Scalise (R-La.) and a legislative correspondent from the office of Rep. Roger Williams (R-Tx).
Scalise’s office released a statement after he was shot in the hip. The statement claimed that the congressman was in “stable” condition and in “good spirits.”
It was reported that “at least five people,” including Scalise, as well as two Capitol Police officers, were shot during the congressional baseball practice outside Washington, D.C.
Sen. Jeff Flake (R-Az.) said the gunman, later identified as James Hodgkinson, was carrying “a large gauge rifle.” During the violent fracas, Capitol Police officers fired back at the shooter with pistols, and Hodgkinson later died as a result of injuries sustained in the shootout.
Sen. Rand Paul (R-Ky.) told Fox News that if not for Capitol Police, “it would have been a massacre.”
Hodgkinson was reportedly a left-wing climate activist who hated Trump and the GOP.
Shouting and panic can be heard throughout the video as people in the vicinity are told repeatedly to "stay down." It is unclear whether or not the "stay down" directive was for the safety of those in the area, or if Capitol Police were telling the gunman to stay down.
"That's one hell of a way to start a f**king morning," Nathan can be heard saying toward the end of the video.
Warning: the following video contains images that some may find disturbing as well as graphic language.