Tacit Blue was a project in the mid-1990's to develop sensors to detect armor formations deep behind battle lines. The aircraft was designed to be low-observable so it could fly close to the battle line. While the aircraft wasn't pursued, the sensors were eventually deployed on the E-8 JSTARS. The Tacit Blue aircraft is currently at the USAF Museum on Wright-Patterson Air Force Base in Dayton, OH.
I couldn't find a 3-view drawing of the aircraft, so the lines are close, but not quite right.
Revised to remove back faces. #Northrop #revised #Stealth #Tacit_Blue #USAF