I don't know
I know only the italian SAR have a response team (from phone call to take-off) in 120 minutes. So now I'm curios about other countries (prefer european)
P.S.: italian SAR is only HH-3F Pelican, AB-212 and (from this year) HH-139 only. Not Long Range SAR and, I suppose, I'm not sure this is the correct topic