An explosion occurred at Northrop Grumman in Promontory early Wednesday morning, April 16, the Box Elder County Sheriff's ...

CORINNE, Utah (KUTV) — A large blast at Northrop Grumman blew the walls off a building at the aerospace and defense company's ...

PROMONTORY, Utah — An explosion destroyed a building inside the Northrop Grumman facility in Box Elder County early Wednesday. No one was injured during the incident, according to the Box Elder County ...