Nurse,
Aware that this is morphing into a different topic, but I'm 100% in agreement about the Merlin being a superb CASEVAC copter. However, its size is an issue compared to the Puma.
Damn sight more comfortable than Chinook!
But, could it get to you at 15000ft in Afghanistan with the fuel / armour /role kit to do the job?
Nurse, you never flew with 1310 Flt out of Divulje Barracks did you?