Walter Reed National Medical Center in Bethesda, Md., was under lockdown for nearly five hours Wednesday after someone called in a bomb threat, according to officials.
Naval Support Activity Bethesda, of which Walter Reed is part, received a call at 8:45 a.m. Wednesday from someone who said there was a bomb at or near building 10 — the main hospital building. The base ordered all gates closed and told personnel across the installation to shelter in place.
Capt. Scott Switzer, the commanding officer at the base, lifted the lockdown about 1:30 p.m. after every building had been cleared with bomb-sniffing dogs.
It was unknown Wednesday afternoon who called in the threat, officials said.