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By Alex Johnson and Pete Williams

Part of the military base that's home to Air Force One was locked down Thursday evening after a woman walked up to the gate and claimed to be wearing a bomb, the Air Force said.

The main gate of Joint Base Andrews, Maryland, was placed on lockdown about 5:15 p.m. ET after the incident at the base's visitors' center, the Air Force said.

An ordnance disposal team determined that the woman didn't have any explosives, said the base, adding that operations weren't affected and no flights were redirected. The lockdown was lifted after about an hour.

The woman was arrested, officials said.

Andrews — formerly known as Andrews Air Force Base — is the facility in the Maryland suburbs of Washington, D.C., where President Barack Obama often takes off and lands aboard Air Force One.

President Barack Obama arrives aboard Air Force One at Joint Base Andrews, Maryland, in April.Jonathan Ernst / Reuters