We used to have RAF Bishops Court until 1989 as part of UKADGE - no problems with the locals until the IRA mortared it. Reportedly it was a mistake and the IRA sent a letter of apology.
Regardless, the decision was made to close at a high level and, during one night, they all climbed into vehicles, locked the doors and drive away.
I was working at RAF Boulmer at the time, the CRC to which CRP Bishops Court reported. They didn’t answer the phone the next day and we couldn’t work out why we couldn’t contact them - we only found out by calling HQ 11 Gp….
So closed the last air defence radar site in Ireland.
https://en.wikipedia.org/wiki/RAF_Bishops_Court
p.s. Lousy radar coverage to the west because the Mountains of Mourne were in the way…