If dreamed you that you are present at the spaceport at missile launch, then in reality you the witness there will be nobody an important event. However it is possible that it will not give you joy. To go to space on a rocket most - to good luck. Without expecting that, you will manage to realize the most, apparently, absurd idea. To launch an alarm missile is a warning of the possible troubles and cataclysms trapping you or your relatives.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.