I was once offerred the jump seat in a NATO E-3A cockpit for landing. All went well until the aircraft started oscillating on the nose wheel and the Italian aircraft captain started to chase it. Just as it got decidedly interesting, the USAF co-pilot called "I have control" and stabiliased things. I never flew AWACS seat 5 for take-offs and landings again, (about 6,500 hours worth) and I always passed offers to the "less experienced" members of the mission crew.
(I also discovered why the Pope always kissed the tarmac after landing with Air Italia).
