http://news.yahoo.com/s/ap/20110127/ap_on_re_us/us_dugway_lockdownSnip:
Base commander Col. William E. King announced Wednesday evening that gates were locked to both incoming and outgoing personnel to resolve the problem, but that no one was in danger.
King and other base officials declined to provide any details on the cause of the lockdown.
About 5 a.m. MST Thursday, base spokeswoman Paula Thomas said the base had reopened to incoming personnel, and preparations were under way to allow people inside to leave.
She said there were no injuries resulting from the cause of the lockdown, which began about 5:30 p.m. She said more details would be released later in the day.
Thomas called as accurate media reports that about 1,200 to 1,400 people — a mix of military personnel and contractors and civilian workers — were inside the base when the lockdown occurred.
Snip:
Military weapons are tested at Dugway, located about 85 miles southwest of Salt Lake City. Its primary mission is defending troops against biological and chemical attacks.
Encompassing more than 800,000 acres of Utah's west desert, the base also is used by the U.S. Army Reserves and the U.S. National Guard for maneuver training.
I gather they have to make biological weapons in order to test the protections against them? Glad they are out in the desert.
Hyperbole for effect