I worked on the Comanche Helicopter program for a while, many years ago. The program was based on the same fundamental idea: create a helicopter that that could

I worked on the Comanche Helicopter program for a while, many years ago. The program was based on the same fundamental idea: create a helicopter that that could perform the roles of advanced armed reconnaissance and attack. The idea has a great deal of appeal. You could save on training pilots and maintenance crew. You could save on supply chain, and the cost of spare parts. Unfortunately, coming up with a design that could effectively fill those roles was more than they could accomplish. Fortunately, the program was cancelled after spending ONLY $6.9 billion.