"John Szalay" wrote

ITs not a case of needing them,
its a case of "you need to know whom is looking at you." In CASE you may
need them..

Remember the U-2 did,nt need them, at first, because nothing could reach
them, but things & times change...

Indeed.

I noted from another reply to this thread, that one of the last flying
models also had this feature.
With your comment in mind, about "at first they didn't need them, but times
change and" (you might),
I might then be able to imply that the later models were the ones that need
this feature.

Is that on the right track?
--
Jim in NC