I remember reading an intercept report (I have no idea how true it was) printed in a trade magazine about some Bear bombers that were intercepted by a flight of F-4 out of Elmendorf AFB in Alaska.
According to article the WSO in the back seat was taking pictures of the Bear. The crew of the Bear radioed their Command Post and asked what to do about the F-4s taking pictures of them.
The reply was, "Wave."
In the article was a picture of the tail gunner on the Bear waving.
As I posted, don't know if the story is true or not, still funny in any case.