Lots of military / para-military applications; CTR, rebro, artillery spotting etc. Resupply is a moot point - you'd need lots of them, have accurate locations and the deconfliction between manned traffic (and each other...) would be difficult.
The
Kmax is already used in an optionally manned version for resupply in Afghanistan. 3000lb of payload is a bit more useful than a DVD and paperback...