Witnesses:
Mr. Gene Aloise
Director, Natural Resources and Environment, Government Accountability Office (GAO)
Dr. Timothy M. Persons
Chief Scientist, Government Accountability Office (GAO)
Mr. Todd Owen
Executive Director for Cargo and Conveyance Security, U.S. Customs and Border Protection (CBP), Department of Homeland Security (DHS)
Dr. William Hagan
Acting Deputy Director, Domestic Nuclear Detection Office (DNDO), Department of Homeland Security (DHS)
Subcommittees: Subcommittee on Investigations and Oversight (111th Congress)
The Science of Security, Part II: Technical Problems Continue to Hinder Advanced Radiation Monitors