The 82nd ATRS (Aerial Target Squadron) in the US Air Force employs a lot of retired Air Force fighter pilots to fly their drones. Most of the pilots are, in fact, former fighter pilots that are now working as government contractors.
In December 2016, the USAF said goodbye to the awesome QF-4E Phantom IIs (yes, the Air Force was still flying Phantoms until the end of 2016!), which now have all been replaced with QF-16s.
I also know quite a few former fighter pilots that are now flying air tankers (aerial firefighting aircraft, not refuellers) for CALFIRE and USFS.