Searching from the Air references

[drsimm1776]

A few year back I read a technical article on a tool of the Army Forensics lab on finding lost graves of soldiers from the Air. They stated it could find ANY disturbed dirt / grave or old disturbed pit houses etc back for approximately 1000 years.
I am looking for references on this machine, software etc in what laboratory of agency of the goverment has one one or uses it.
Any and all references accepted and welcomed.