Couldn't' there have been three distrinct different aircraft with a similar avionics, and maybe similar engine, other common parts, yet have perhaps three different wing designs, fuselage etc to make each aircraft better as either an air to air, strike, or STOL platform. Trying to shoehorn the f-35 into all these roles only makes itsforthcoming competitors better able to exploit its weaknesses. Its a flawed concept we are stuck with unfortunately. It seems like the f-35 isn't going to be adaptable enough for the next 50 years. Lockheed saying it will be is pure insanity and fraud.