1. Systems Integration Division, Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899
2. Systems Integration Division, Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899;
3. Applied Research Laboratory for, Intelligence and Security, University of Maryland, College Park, MD 20742
4. Applied Economics Office, Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899