found: CRS report for Congress, Nov. 11, 2004, via CRS web site, Jan. 23, 2009(report: Bolkcom, C. Potential Military Use of Airships and Aerostats; summary: The Department of Defense (DOD) has a history of using lighter-than-air (LTA) platforms such as airships (blimps) and aerostats (tethered balloons). Aerostats have recently been fielded to protect U.S. troops in the field. Contemporary interest is growing in using airships for numerous missions. This report examines the various concepts being considered and describes the issues for Congress)
