At one time Ream Field Imperial Beach was the major Helicopter Base and known Helicopter capital of the world
Later the choppers were located over to North Island Naval Air Station.
Ream Field, Imperial Beach is now a Naval Auxiliary area
and presently operates as a branch of the NAS North Island Naval station.
Border Patrol choppers may also use the field as is close to the border.
It stills seems to be busy in the area at times, especially at night. I have a friend who was in the BP back in the 80’s and 90’s and said many times, illegal immigrants who get over the fence and would be sprinting across as choppers were buzzing around. Crazy. Hopefully they have corrected that problem.