US Government Invests $1.2B in LTA

The product of multiple taxpayer funded programs
costing more than $100 million each and a combined thirty years of development, where are they today and why?
Aeroscraft’s Dragon Dream
is a fully-rigid, hybrid airship design.
HAV’s Airlander 10
is a simi-rigid, hybrid airship design.
Lockheed Martin’s P-791
is a semi-rigid, hybrid airship design.