"Initial reports suggested two people were firing at each other. However, sources said investigators now believe the Secret Service agent was the only shooter."
It's not even clear that the suspect had a gun, but you know, what other long, tubular shaped metal object could they POSSIBLY have been carrying near a golf course? 🤔
The article you linked was updated, looks like he did have a gun and was spotted while aiming through the fence:
Investigators found the suspect had left behind his “AK-style” rifle, as well as two backpacks, one of which contained ceramic tile, at the scene, Bradshaw said.