I was an EMT for a few years and I'm hard of hearing so I bought this stethoscope and it helps amplify the sounds.
I'm out of the field and I need to sell due to bills. The link is below
http://www.cardionics.com/e-scopeelectronicstethoscope.htm
I need to sell to pay some bills off so best...
I think working in Fire/EMS is the best way to go. I did it for 5 years as a volunteer in NY and I regret getting out of it. If you have a volunteer department, join up. You can get alot of the training and certificates you need for free.