right thought i would join in ! used to work for a civvy company in the falklands early 90,s we had land rovers fitted with nato towing hitches at front and rear for pulling ground pwr units water meth rig etc and will never forget one day when a work mate hooked up a pwr unit pushed down the top of towing hook expecting it to lock but due to crud it did,nt , he went belting off towards the helicopter next thing he saw was ground pwr unit overtaking him heading to s61n !luck would have it it went up a bank instead but he had eyes like a racehorse on steriods for quite a while after that!:cool2: