It's time to post once again about this perennial problem - lots and lots of repaints listed for the -707 but about half have a dead-end for a download address, and in particular the E-3 aircraft.  There must be 8 or 10 on the site, along with some KC-135s (without the tail boom) but only one out of all this has an active download link.  I can't believe no one - but no one - is putting out repaints for the E-3.  Tried to download Nathan Phillips' E-3 textures and it came back to a French-language site showing a list of downloadable books, articles, etc.  Is there some site - anywhere? - where these things are available?

FSX is dated and a lot of time has passed. You will have to really dig to find paints. Unfortunately, my FSX hard drive with 10 years worth of 707 liveries and panel mods bit the dust yesterday. However, there are still a few places to look at.
In the General section page 5, 7 threads down, Nathan repaints:
https://www.captainsim.org/forum/csf.pl?num=1420153950
Another excellent one to add to your hanger:
http://repaint.eddl.de

You might PM Jetranger and ask if he still has paints and request a link and post it here.
I will keep looking. Don