"Hi! Me again! The RHoK guys have gone away from discussing this and are actively working on processing - currently in Sydney, AUS. There's a live video feed from http://www.ustream.tv/channel/rhok-sydney
"You are right William! The Hummer in the press release has no Radar antenna that I can see. The optics on the right hand side of the vehicle seem interesting."
"Looking at the trials featured above, it looks like they rely upon the UAVs being where they last left them ;-) There's not obvious Radar equipment on the big nasty machine pictured. Image tracking seems likely."