Gate Soldiers inspect all vehicles entering Fort Bliss, home of the United States Army Air Defense Artillery Center.
Army officials say they'll reveal more information on radiation contamination of a Cold War-era bunker.
The update will come Friday at a Fort Bliss news conference. The bunker was used to store and assemble nuclear bombs decades ago and was recently found to be radioactive.
The Air Force used the bunker in the 1950's and 60's before Biggs Air Force Base was transferred to the Army in 1966. The Army says it was unaware the bunker was potentially hazardous and has used it to store rifles for training soldiers since 2003.
A veteran alerted the Army to the risk several months ago. About 60 people who worked in the facility over the years have called a hotline. Experts are studying the bunker and will search for buried radioactive residue.