I've often thought that an R66 painted green would make a useful cheap short range military aircraft - bear with me on this!
They're cheap under $1M
You could put bench seats on the outside for 4 pax or stretchers.
When compared to a $20M 20 seat transport helicopter they're 4x cheaper per seat mile. Yes, to carry those 20 pax you'd need 5x the pilots, but initial/recurrent training can be done on an R22. Having 20 guys in 5 aircraft rather than one spreads the risk and requires 5x the ordinance to destroy.