Absolutely frustrating, but sometimes all you can do is to standby.
Afterwards we did a quick hot wash (debriefing), where we discussed the liability issues of giving rescue equipment (air chisel) to non-rescue personnel. It worked out and I am not sure what else we could have done, but it could have gone very badly.
Pete
The SAR unit with which I was affiliated included several individuals whose prime outdoor activity was caving, as well as a fair number who were reasonably comfortable in the cave environment. Fortunately we were never at the point where we needed to use power tools. We would undertake about one cave operation a year.
One of the advantages of a volunteer organization is diversity. Several of the climber/caver types were professional engineers, which was a big help when weird rigging was required.