(Editor's Note: This story has been updated to reflect that the Defense Department was to brief the congressional defense committees within 270 days of the Fiscal Year 2012 National Defense Authorization Act's enactment in late December 2011, and not December 2012 as originally reported.) The Pentagon is poised to demonstrate a rigid-hull, variable-buoyancy hybrid air vehicle next month amid efforts to develop a concept of operations for the technology. The Defense Department plans to hold the Project Pelican demonstration...
