Around here (Pennsylvania), "medic" is short for Paramedic. This is a pre-hospital health provider who is generally allowed to start IVs and push certain drugs through them. However, blood and or blood products are not carried by paramedics.
There are several kinds of pre-hospital medical responders, First Responders (approx 50 hours of 1st Aid training), EMT-B (140 hours of training), EMT-P (paramedic, 1 year after EMT-B) and pre-hospital trama nurse ( 6 months after Registered Nurse training).
I would guess that a Registered Nurse could administer blood products under the supervision of a Dr. In that case, I would rather imagine that they have some knowledge of Wt objections to transfusions. I can say this though, as I'm an EMT-B, the general tone of our protocols is in an life emergency we are to take what ever measures necesary within our scope of practice (up to the level of our training) to protect/maintain life. So, lets say that a person is in a car wreck, lots of trama and bleeding and UNCONSCIENCE, they are taken to the ER and need blood to maintain life. If the doctors do not have a valid document not granting permission to do a transfusion and the Dr orders one and the patient is a JW, the JW is basically SOL. If they have one of those no transfusion bracelets and it falls off, they are SOL with little future recourse. If a friend or relative insists no bood, the Dr is probably going to ignore them unless it is a minor child's legal guardian and even then the Dr may try to have guardianship revoked. So, if you ask me, a JW who is really serious about not having a transfusion, they should have directions to the effect tatoo in 4 places, but that would also be against WT rules. I have a JW friend with a no blood keychain. From a first responder perspectice, this is useless. If I ever saw one in a car ignition, I would throw it as far as I could.
In EMS, if it ain't in writing, it don't exist.