Well, the F-117 was developed in complete secrecy. And, I'd like to add, in busget and on time. All that using a bunch of stuff coming from the F-15 and F-16 pr

Well, the F-117 was developed in complete secrecy. And, I'd like to add, in busget and on time. All that using a bunch of stuff coming from the F-15 and F-16 programs. My pet theory is, that those twonhad a ton of cost overruns regarding spares and such because avionics and engines for the F-117 had to be sourced somehow.