Retired USAFanon here…providing context regarding security incident at base in England:

The base is RAF Mildenhall in Suffolk. The USAF has operated out of this base since at least the mid-60s when F-111s sat nuclear alert. There are probably still tactical nukes stored here for deployment by modern aircraft.

Because of the nukes, USAF security personnel are AUTHORISED TO SHOOT TO KILL intruders to the base who cross into the buffer areas where the nukes are stored.

Pic related (bonus info: lookup ‘El Derado Canyon’)