The Air Force and the Defense Advanced Research Projects Agency plan to award a contract "in the next few months" for the development of a stratospheric airship that can simultaneously track airborne and ground targets in flights lasting upward of 10 years, according to a DARPA spokeswoman. The unmanned airship program -- Integrated Sensor is Structure, or ISIS for short -- is "on the cusp" of going into its third stage, DARPA spokeswoman Jan Walker said in a March 16...
