Turns out the nevada man arrested with guns in the back of his truck in California had them for personal protection because he was a journalist who got death threats for supporting trump
He is currently free a $5000 bond for breaking a California law regarding transporting a loaded weapon.
https://www.newsweek.com/vem-miller-trump-assassination-attempt-coachella-1968401
Aman who was arrested with a loaded gun outside a Donald Trump rally in California has denied that he was intending to assassinate the former president.

Vem Miller, 49, of Las Vegas, was arrested Saturday at a checkpoint in Coachella Valley after he was allegedly found illegally in possession of a shotgun, a loaded handgun, and a high-capacity magazine. Miller was also driving an unregistered vehicle with a homemade license plate and had multiple passports and driver's licenses with different names, authorities said.

Chad Bianco, the Riverside County sheriff, told the Southern California News Group on Sunday that officers had "probably stopped another assassination attempt." There have previously been two suspected assassination attempts on Trump in recent months. The former president was left with minor injuries after a gunman opened fire at a campaign rally in Butler, Pennsylvania, in July. Trump was also the target of an apparent assassination attempt at his golf course in West Palm Beach, Florida, in September, though no shots were fired at the Republican.