3-year-old domain with some WordTracker, and even a tinge of Overture competition. It's a pretty common English expression, too.
Thing is, I don't really see a lot of money behind this domain. You could try selling it to emergency equipment manufacturers, ambulance companies / paramedics, fire departments, and municipal fire safety policymakers. It's a name whose end-user pool is broad more than deep -- i.e. numerous potential end-users, but none too likely to think the domain has more than tangential value to their objective. The domain's also pretty long.
I'd give it $55-$65 to a reseller.