Joint Base Andrews is on lockdown Thursday morning after a report of an active shooter.
The notice was posted shortly after 9 a.m. ET.
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All personnel have been directed to shelter in place.
The base posted the lockdown notice on Twitter.
There are reports that there was a planned drill today, but it is not known at this time if the lockdown is related to the drill or not.
This is a developing story, return for updates.