High Quality Content by WIKIPEDIA articles! Lockheed Have Blue was the code name for Lockheed`s "proof of concept" (i.e. demonstrator) that preceded the F-117 Nighthawk production stealth aircraft. Have Blue was designed by Lockheed`s Skunk Works division, and tested at Groom Lake, Nevada. The Have Blue was the first fixed-wing aircraft designed from an electrical engineering (rather than an aerospace engineering) perspective. The aircraft`s plate-like, faceted shape was designed to deflect electromagnetic waves, greatly reducing its radar signature. Two flyable vehicles were constructed, but both crashed during the flight-test program.