Walt was killed at the Who Concert. He was 22 years old.

The Who concert disaster was a crowd disaster that occurred on December 3, 1979, when English rock band the Who performed at Riverfront Coliseum (now known as Heritage Bank Center) in Cincinnati, Ohio, United States, and a rush of concert-goers outside the Coliseum's entry doors resulted in the deaths of 11 people.^[1][2]