Just get your EMT-B in the summer and volunteer on a firedepartment. The EMT-B class you get done with in a summer and its not that hard. Depending on where you take it, it can be somewhat a lot of work (tons of busy work).
Looking at your MDApps, you seem to be pretty weak on the clinical experience side...I'd work harder to start volunteering in a hospital if I were you, at the very least. That way you can meet different docs to shadow too.
It does pass the sniff test (please pardon the pun) but I wouldn't classify it as volunteer, clinical because as was mentioned, it is better classifed as "other" (shadowing) because you weren't really providing a volunteer service.