Keflavik.
They did when I
was stationed there from 80 to 82 and I was surprised to
hear that they are still there.
It would stand to reason though that at least some of them
would remain in use as long as the Orion itself is kept in the active
inventory.
Here's the last commercial simulator for the Lockheed L-188 (Electra). This
is the civilian version of the P-3 Orion.