hakksar has it right. Things vary from state to state unless they follow the DOT national EMT curriculum. Georgia was one state that allowed "EMT-B's" to start IV's, use EOA/EGTA/Combitubes, use MAST/PASG, use AED's, and even start IO lines. When Georgia adopted the new DOT curriculum, they created an EMT-I category. EMT-B's now are better-trained first responders, whereby EMT-I's now do all the stuff that former state EMT-B's did. Georgia did not, however, adopt EMT-I's administering drugs.
Why am I telling you all this? Because it varies significantly from state to state. Which state are you in, Microbe?