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DAYTON, Ohio (AP) – An Air Force base in Ohio says a 911 call during a training exercise set off reports of an active shooter that sent dozens of security forces and other emergency responders to the base.

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Wright-Patterson Air Force Base says someone called 911 Thursday during the exercise that included an active shooter scenario at a separate location.

The base says the call sent authorities to the hospital. During their investigation, a security team member shot his firearm to open a locked door. That gun discharge happened after the active shooter reports.

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Wright-Patterson says via Twitter that base personnel remain safe.

The base had sent a tweet early saying it was responding to a “reported Active Shooter incident.”

The sprawling base has about 27,000 civilian employees and military personnel.

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