Someone like this has put his entire, or most of this adult life on the line for his country. He was watching the country get bought by the highest bidder, Elon, and are having a serious conflict of interest, conversation with God, type of moment. He was probably huge MAGA, and snapped. The cybertruck infront of the Trump hotel is message. "Elon did this. Elon blew up MAGA, America etc". He became a man with no nation, but was a dangerous man taught by the government none the less.
He's killed people for America for a living. There will be many more like him who snap if they feel betrayed by their government. Some of these military people can flip a switch as easy as night and day and justify murder in their minds.