"guard opens fire"
Not true.
"The intruder entered the same hangar as President Biden's 'doomsday' plane."
Not true.
For context, information from this article with inaccurate headline.
https://www.foxnews.com/us/intruder-breaks-into-air-force-one-facility-guard-opens-fire
And from that very same page
"An intruder broke into Joint Base Andrews in Maryland, where presidential Air Force One planes are kept, and was soon fired upon by a base resident Monday.
"The individual gained access to the base Monday morning, before being spotted at a housing area inside the base."
"A man gained unauthorized access to a JBA housing area. A resident discharged a firearm, security forces arrived on scene to apprehend the intruder and law enforcement is investigating the incident,"