Brett Schwanbeck was hit almost immediately when the first shots were fired, his niece Carla Dawn wrote in an online fundraising page.
Schwanbeck, 61, had been at the concert with his fiance, Anna. She found refuge in a dumpster as the shots kept coming, then ran back to Schwanbeck and begged for people to help him as soon as the shooting stopped, Dawn wrote.
Schwanbeck was rushed to a hospital, where he fought his injuries for two days before dying Tuesday.
His niece described him someone who “would drive 500 miles to help you if you needed it.”