Mystery continues to shroud Las Vegas Cybertruck bomber's motives, authorities say

Decorated Army Special Forces Master Sgt. Matthew Livelsberger had an 8-month-old daughter at home and a new assignment involving drones that friends said excited him. He wrote glowing Yelp reviews praising the tattoo parlor in his Colorado Springs hometown and touting the benefits of float spas. And when his father last spoke with him on Christmas Day, he told CBS News, all seemed normal.

He "loved the Army and loved America," Roger Livelsberger said. 

Matthew Livelsberger, 37, was on holiday leave from his station in Germany and his father had figured he would be returning to Germany. He said nothing with his son seemed amiss.