RAF Thorney Island 1970. I was a UAS APO on Summer Camp and went along on a Herc CPT trip.
I certainly recall hurtling...well, rolling down the runway on one circuit when the LHS occupant reached up and pulled the #1 engine T-handle. It stopped PDQ and the co-pilot wrestled the thing into the sky quite successfully.
But lots of things have changed since then:
1. Practice asymmetric has largely been canned.
2. Most high-risk training is now done in simulators.
Oh and:
3. RAF Thorney Island has been transferred to the grunts.
4. UASs don't have proper summer camps any more.
5. UASs don't have many (or perhaps any) APOs any more.