When I first received professional auditing, I noticed that while is in that near sleep state, just prior to going over to a deeper sleep state, there were all sorts of color patterns, like I had stirred something up.
Regarding Scientology dreams, never having had the intense experience of being on staff, I can't say I remember any. My being in the Navy was far more of intense thing, and I did have plenty of dreams about still being in, having it drag on and on, or, conversely, doing what was actually the best thing about it ... interestingly enough, being out to sea, on deployment, on watch ... and being taken into a room by a former boss of mine and sat down at a desk with a phone and a stack of leads, all alone, expected to call all these people and make sales.
I suspect that the dreaming is evidence of a mild form of post traumatic stress disorder. Maybe you don't have to actually be in combat to get PTSD, it might be a matter of how severe. Even a mild case can royally upgaphuq your life pretty badly, the dreams are probably the least of it.