A highly decorated Army soldier who fatally shot himself in a Tesla Cybertruck just before it blew up outside the Trump hotel in Las Vegas left notes saying the New Year's Day explosion was a stunt to serve as a "wake up call" for the country's ills, investigators said Friday. Matthew Livelsberger, a 37-year-old Green Beret from Colorado Springs, Colorado, also wrote in notes he left on his cellphone that he needed to "cleanse" his mind "of the brothers I've lost and relieve myself of the burden of the lives I took." Livelsberger served in the Army since 2006 and deployed twice to Afghanistan. More from the AP: