I once saw a Chinook release a 4 tonner over Otterburn. The load was spinning like mad and the pilot appeared to be having a lot of trouble with it. It made a hell of a thump, the noise rolling gracefully up the valley towards us. Apparently those experts load riggers at JHSU had used 1200 cord instead of 150 for the breakaways which had made the load very unstable when some broke but others didn't.
The RLC had set up a Logs base over the road from us on the Harrier strip and this 4 tonner was destined for them. The vehicle arrived eventually, on a couple of DROPS lorries.