Space Daily Express, 20 July 2005

Using a 17-foot-long helium-filled blimp, four propellers and sophisticated electronics, three Johns Hopkins undergraduates have built a model airship that will aid professional engineers who are designing a military craft to conduct surveillance at the outer edge of the Earth’s atmosphere.

The similar but much larger unmanned airship is being developed by engineers at Johns Hopkins University’s Applied Physics Laboratory to provide visual and communications support from an altitude of about 100,000 feet above sea level.  (more)