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Photo: Contributed
2013 picture of a guard at Fort Sam in Texas.
A desk sergeant at the U.S. Army's Fort Sam Houston says the San Antonio post has been put on lockdown for an undisclosed reason.
The official says the lockdown began Sunday evening, and it's undetermined how long it will last. He declined to give his name due to department policy.
According to the city of San Antonio's website, the base was established in 1910 — the ninth-oldest Army installation in the U.S. Fort Sam Houston now encompasses 3,000 acres (1,210 hectares) and is home of military medicine and part of Joint Base San Antonio.
