I keep having the uneasy feeling that many "programs" can never be completed as intended. The other military-related program that comes easily to mind in the "littoral" stealth coastal defense warships.
In the non-military arena there are of course many more examples. Self-driving cars, cell phone controlled homes, computerized critical civilization infrastructure, e.g. the electrical grid, water and sewage treatment plants, safety in the world transportation system, including all land and water transportation as well as the obvious air-travel system.
What could all these seemingly unrelated things have in common?
Hmmmmm... indeed!
See A-12 “Avenger”/1 Billion $s and all we got was a drawing.