Joint Base Andrews, a few miles outside Washington, houses the fleet of blue and white presidential aircraft, including Air Force One.

The base has faced security issues previously, including when an intruder reached the housing complex last month. A resident opened fire on the trespasser.

Two years ago, a man breached several spots on the base — including a military checkpoint — and climbed into a C-40, a transport jet primarily used by members of the Cabinet, Congress and military combatant commanders.

https://apnews.com/article/andrews-lockdown-active-shooter-7a6f438c8ef35a886c7f7da5f3121b3d