All by himself. Notice how the two arrested at the Walmart, that had entered the store wearing all black outfits and exited wearing nondescript clothes, has dropped from the news. Initial reports indicated that their car (Texas plates) had been impounded and that the two had been spotted and called in to police as suspicious. No mention by the media after the initial report.
Note that something similar happened in Dallas with three arrested after initial reports of multiple shooters. No mention by the media after the initial report.
In each case, DHS and FBI were on the scene and the “lone shooter” and “not a terrorist act” memes were immediately put in place.
I trust nothing I see on the news, nothing from the FBI and absolutely nothing from a politicians lips. We are in a world of shiites.