Jan. 3, 2025 The Green Beret who blew up a Tesla Cybertruck outside the Trump International Hotel this week in Las Vegas and took his own life had written that he wanted to send a “wake-up call” to the country, the authorities said on Friday. In notes recovered by investigators from one of his phones and made public on Friday, the soldier, Master Sgt. Matthew Alan Livelsberger, praised President-elect Donald J. Trump and wrote that “our soldiers are done fighting wars without end states or clear objectives.” On New Year’s Day, he pulled the Tesla, which was packed with explosives, into the driveway of the hotel and fatally shot himself before the vehicle went up in flames, injuring seven bystanders and stirring alarm far beyond Las Vegas. Nothing about what might have led him to take his life had emerged publicly until Friday, when the authorities disclosed that Sergeant Livelsberger, a veteran of several combat tours, had post-traumatic stress disorder and had written in a notes app on his phone that the country was “headed toward collapse.” “This was not a terrorist attack,” the note said. “It was a wake-up call. Americans only pay attention to spectacles and violence. What better way to get my point across than a stunt with fireworks and explosives?” At a news conference on Friday, Assistant Sheriff Dori Koren of the Las Vegas Metropolitan Police Department said that in the notes, Sergeant Livelsberger had gone on to “explain a variety of other grievances and issues — some political, some personal.” We are having trouble retrieving the article content. Please enable JavaScript in your browser settings. Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times. Thank you for your patience while we verify access.