I retain some skepticism, of course: any Franklin grave, 160+ years later, could have receded into the background radiation of thermal imagery, much as the grave of Lieutenant Irving receded back into the visual static of rocky scree and boulders. Nevertheless, given the enormous size of the area to be searched, it seems a very sensible approach to use any sort of visual or scientific telemetry to identify worthy targets in a (frozen) ocean of possibilities. Dave Woodman did much the same with his magnetometer search, and Parks Canada have tried the same approach with side-scan sonar. Even if, on examination, most of the targets proved to be natural features, we certainly need something to limit the size of the haystack in which we are to search for this needle.
Ron has an excellent blog in which he's detailed his progress so far, including landing at Arctic airstrips in adverse wind conditions, relocating an abandoned HBC post, and visiting a church in Churchill whose stained-glass windows were donated by Lady Franklin -- I urge everyone who follows my blog to follow his! There's also just been a great article on Ron's efforts in the Lakeland Times. I'm sure that the best wishes of all Franklin buffs go with him on his search this season!