There are numerous ways to "see" the ground, e.g., Archeologists use machines to see if the dirt has been disturbed, how deep, what configuration, hollow spaces. There might even be good information from those studying volcanos, doesn't some of that give off heat? I know there are laser heat sensors. Why isn't that technology being researched and applied here? In LE if no one reviews video or watches what a camera shows, e.g., in Vegas, the information is useless. Work smarter, not harder-- Sorry, don't know what a M113 APCS is... Good Luck, Curtis--