Dugway Proving Ground, in Utah's western desert, was placed on lockdown Wednesday evening.
Al Vogel, a public affairs specialist for the installation, would only say that the lockdown began at 5:24 p.m. Employees were not allowed to leave, and those coming to work were not allowed in. Vogel said there were no injuries, no damage and no threats reported at the proving ground. There were about 1,200 to 1,400 people at Dugway when the lockdown occurred.
Dugway Proving Ground is a U.S. Army testing and training base in Tooele County where military weapons are tested.