Looks like a communications guy with his man pack, Kinda like me. KC3DX is my Amateur radio call sign, my personal is Lee I live in Pocono Summit, Pennsylvania and I have talked to people at least half way around the world with my barefoot (100Watt) rig. While traveling I have my HT set to 146.520MHz. I don't see a mission for this TB, but perhaps he could meet other radio operators such as myself along the way.
73 to all you geocachers out there around the world.