An explosion completely decimated a building in the Northrop Grumman rocket testing facility in Promontory, Utah, on ...

BOX ELDER COUNTY. Utah — Authorities are investigating an explosion at Northrop Grumman Innovation Systems that happened ...

Governor Spencer Cox said Thursday he's been told "there's no danger to the public" from the Northrop Grumman explosion, and ...

PROMONTORY, Box Elder County — No solid rocket motors were lost or damaged in an explosion Wednesday in remote Promontory, a company spokesperson for Northrop Grumman told KSL.com Friday.

Emergency crews are on scene after an explosion at a Northrop Grumman facility in Box Elder County sparked an active fire.

An explosion destroyed a building at Northrop Grumman’s Promontory missile and rocket plant in Utah’s West Desert on Wednesday morning, according to a press release from the Box Elder County Sheriff’s ...