Joint Base Andrews, formerly known as Andrews Air Force Base, in Prince George’s County, Maryland was on lockdown Thursday morning after a report of an active shooter, the base says on Twitter.
“There were reports of an active shooter incident on base at Malcolm Grow medical facility at approximately 9 a.m. today, June 30, 2016,” according to a tweet.
An all clear has since been given at the base.
There were no reports of shots fired or injuries.
Here’s what you need to know:
1. Someone Reported an Active Shooter After Seeing Men With Rifles Who Were Taking Part in a Drill
NBC News is reporting there is no active shooter at the base.
The incident began when someone saw two people taking part in an active shooter drill carrying long rifles outside the base and reported it, a senior law enforcement source tells NBC News.
The base responded to criticism on Facebook that it has not provided enough information and is creating a panic, “Joint Base Andrews is working to ensure the safety of those on base. Because the incident was reported as a real world active shooter we have to respond accordingly.”
2. Personnel Searched the Base Out of Precaution
Joint Base Andrews said personnel were sheltering in place at the base after the report of the active shooter.
Police were searching the base to clear it room by room, taking every precaution, officials said.
3. There Were Reports of a ‘Barricade’ Situation in the Medical Facility
There have been reports of a “barricaded” person inside one of the medical facility buildings.
According to Stars and Stripes, the Pentagon said there is a “barricade situation” on the third floor of Building 1060.
Those reports turned out to be false, officials said.
4. The Base Is Home to Air Force One
The base is home to Air Force One. It is also the home of the 779th Medical Group at the Malcolm Grow Medical Clinics and Surgery Center, where the situation is focused.
According to the Joint Base Andrews website, the center “currently offers a full range of primary care services along with 22 subspecialties, dental care, acupuncture and aerospace medicine.”
“In addition to providing direct patient care, it is affiliated with the Uniformed Services University of Health Sciences and serves as a training facility for 48 medical residents and 31 health professionals. MGMCSC also provides medical support to Presidential and Congressional special Airlift Missions and maintains a 45 bed Aeromedical Staging Facility. MGMCSC is undergoing a four-year military construction project to expand and upgrade the facility with state-of-the-art outpatient clinical care services and same day surgery. Services will not be impacted during construction.”
Joint Base Andrews was formed in 2009 when Andrews Air Force Base merged with Navel Air Facility Washington.
5. The Homeland Security Secretary Told Congress There Is an ‘Unfolding Situation’ at the Base
Homeland Security Secretary Jeh Johnson is testifying before Congress about terrorism Thursday morning.
He told the Congressional panel he may need to take a break from the session because of an “unfolding situation” at Joint Base Andrews.