I would argue that if your program is doing either then you should also be carrying blood products on the A/C.
I just recently changed programs, went from one who was very evidence based and had PRBC's for every mission, to one which is a little behind the times protocol wise and doesn't have blood. The blood was clearly not a factor in my decision but I wouldn't want to drop a chest tube and not have the ability to replace blood out with anything other than blood. I am also in a relatively urbanized area, with most flights averaging less than 30 minutes to a tertiary trauma center.