Lucid Time!

The dream involved me, Manei and another male DC filming some sort of TV series about government conspiracies. We were walking down a hallway that resembled my old school, but there was a very dingy atmosphere to the place as if nobody had been here in awhile.
On one side of the hallway, there were offices. The male DC touched one of the doors with a stick. This caused a massive copper colored vault door to slam shut over the office entrance. He proceeded to explain to me that the place had security that could lock you in or out.
Eventually, we arrived at a seemingly important office, and I carefully stepped inside and grabbed a vanilla folder with documents inside and brought it out. I began to look through them, but an alarm sounded, and the other DCs ran away. But for some reason, I was trying to find something in the papers.
I soon realized that they were documentations of dream characters that I've met before. But I was still hurrying though them looking for something, I can't remember what.
Eventually I grabbed the documents, and ran off in the same direction as the other dream characters had. The alarm was still blaring, but there were no police or anything. Then a small piece of the ceiling fell onto my shoulder.
I looked over, and was relived to see that it was just a small piece, but I looked up at where it had fallen. There was a small hole, and in it, a small robotic spider with a camera attached to its back.
For a brief second, I saw an unusual symbol, and then woke up. The awakening was terrifying for no apparent reason, When I woke up, I couldn't remember what was so scary about the dream, and was able to fall back asleep very easily.