The man’s name is Jesse and he was a competitor at the WAC 2023 Lake Havasu Steel Challenge held January 29th. He’s a sport shooter outfitted for a course called the Pendulum or the Run and Gun. Shooters will discharge between 100-300 shots depending on the course in under 20 seconds; sometimes we’ll under! You can’t see from the angle, but he has several mags on the front of the belt as well. This Subway a Culver’s and a Starbucks about a quarter mile from the competition grounds were frequented by competitors throughout the day as they were provided food and drink vouchers for the establishments.

Info given by u/hyperborian_wanderer