In Illinois, paramedics do not administer blood. I doubt they do it in any state. They just do not have the time and equipment to carry different blood-types in refrigerators and they certainly do not have the time and equipment to determine the blood-type of the patients.
They put fluid in the blood. Typically, the fluid is saline. It is not refrigerated. They may put drugs in also, but not blood itself.
I have heard of medical advancements where some blood products could replace saline, but they would still not be whole blood, so Watchtower could say these "fractions" are okay. I don't know of any areas where these products are in use by paramedics, but it's a big world and there probably are some places.