To echo Mick-Boy - Chinook Med is great.

Another great Colorado Company is Rescue Essentials in Salida. They sell North American Rescue and Tac Med Solutions stuff.

As far as training I have a Casualty Care class coming up in August at Bowers Tactical.

If you (or anyone) want more training I can also provide the Emergency Medical Responder course (this was formally known as First Responder). This is one step below EMT training but much better than basic First Aid training. It is a very good course that provides a great deal of knowledge, skills, and abilities. It is a long class, about 50 hours.