Dream: Lucid Intercourse

This dream came in at least two sessions.  I remember two main parts.  The first part of the dream was almost like a nightmare.  I was with a number of people, possibly around five others, and we were being chased by what may have been demons.  I remember they took numerous forms including those of little children.  My most vivid memory of this part is walking down the stairs out of an old locomotive, looking back and seeing a person, maybe three feet tall or shorter, wearing a clown mask.  We were running around in an urban environment but there were no other people.  It seemed almost like a subway station.  I have a feeling that it was daytime but that may just be because the second part was during the day and it seemed to follow very close behind chronologically.  The second part of the dream was spent with Tanneese.  it may have started before, but the first thing I remember is being in a two seat amphibious plane.  Tanneese was flying it.  We were definitely fleeing those creatures and were flying over a beach, maybe of an island.  Something, I do not know what, went wrong with the plane and we were going to crash land.  It seemed as though we were going to crash into the ocean and I was beginning to become terrified.  I started becoming lucid, however, and inadvertently forced the plane onto the beach.  I quickly got out of the plane and saw the ocean waves crashing on the plane as I turned to get Tanneese out.  I realized that the waves could pull the plane into the ocean and I grew terrified again.  This time, my lucidity forced my fears to come true and the waves began engulfing the plane as I struggled to pull Tanneese out.  I managed to get her backside out of the window when I noticed that my arm was invisible.  In my curiosity, I forgot about the ocean and the waves calmed down.  I noticed that even though I could not see my arm, I could sense its general location and still had a sense of touch.  I could feel the plane door as I tried to make sense of things, moving my arm around.  It was my right arm.  I do not remember if it was an accident or not but I felt Tanneese’s thigh, and then her buttock.  Apparently she was wearing a skirt.  I believe she was unconscious through all of this.  I lifted up her skirt and put my fingers in her vagina.  Eventually I pulled out my penis and entered from the back.  Her rear was still the only part of her outside the plane.  I continued having sex for a while when I noticed that we were now in a bed having sex missionary style and Tanneese was awake, but silent.  There were three or four guys around the bed watching.  I am not sure if I stopped or slowed down but I know that I did not pull out.  That is the last thing I remember.