Do 15T's attached to a medevac unit assist the flight medics rendering medical aid or are they more focused on the aircraft?

A good medevac Tango always ensures the ACFT and the crew are his first priority, however, if the situation and mission requirements allow he’ll pack up his medic with patient care as he can

I have had ncos tell me about their crew chief experiences how they helped out the medic, but regardless of what kind of unit youre attached to, your main concern is the aircraft

I’ve been a CE on medevac my whole flight career and yes you do help. I was a prior Emergency Service member before joining the army but regardless when it comes down to that patient you are going to be helping, Like SGT Barrie said wether it be bagging helping with IVs controlling some bleeding it becomes second nature to assist your Flight Paramedic. You are concentrating on the aircraft start off providing security for the MO(Flight Paramedic) when you get to the LZ but after takeoff only in the critical modes landing/maneuvering acft. It’s a very rewarding mission you will never forget your time in the MED nor the lives you directly impact because of it.