"Ron" wrote in
:

Interesting shots. First thing that crept to mind was "early
competitor to the EA-6A/B". The F3D (or F-10 after 1962) was used in
the EW-role for some time by the USMC in Vietnam, under the
designation EF-10B. They retired them in 1970, around the same time
the EA-6A and B came around.
http://en.wikipedia.org/wiki/F3D_Skyknight

Ron

Good Morning Ron,
That's the first thing I thought...given the larger cockpit area, this was
an EW/ECM proposal. And actually the last F3D/F-10 was retired from the
Navy in 1978. Thanks for your thoughts !!!
Jim