DC-8 JT3D-3 Series 54s also had inflight reverse on the inboards.

I saw it on my First Officer OE and never saw it again. I didn't want to see it again, either. Each DC-8 series had a bold face memory item procedure for stowing reversers. Some DC-8 reversers were pneumatic and some were hydraulic in operation.

UPS still operates a fine looking fleet of DC-8s and pays people quite well to fly them.

There was, of course, the 'special' C-130 modified with retro-rockets for ultra short landing in the Iranian hostage rescue attempt.

Comes under the ' seemed a good idea at the time ' heading, as for whatever reason the rockets fired while still some way up, with unpleasant results...

Maybe a victim of rushed development.