Dozens of police descended on Tyndall Air Force Base in Florida Tuesday morning after an active shooter drill was mistaken for the real thing.
Patrol cars, firetrucks, and ambulances swarmed the military base, located in Panama City, shortly before 10:30am local time.
Tyndall Air Force Base Spokesman Scott Johnson said the situation was a mix-up after local law enforcement didn't realize that a practice drill was taking place.
There are no reports of any injuries.
On social media, audio surfaced of a 911 call featuring a frantic dispatcher repeatedly stating 'This is not a test'.
The base, which has a resident population of approximately 3,000, first opened in 1941.