Interesting that they apparently are employing drones, in addition to the drone that Merrell is offering to provide. This is good.
A few months ago, there was a blanket prohibition within the NPS on use of any drones for any purpose, until appropriate policies could be developed to properly manage this new technology. I don't know if this has happened, or if this situation received an exception, but it is good news that there are drones, as well as boots, on the ground.
SAR is one of the most obvious, and probably one of the most productive uses, of drone technology.
Geezer in Chief