Nuclear Explosion shot

This shot we as a group learned a lot from. We did the same as the UFO but this location was Box Hill. We learned how to do this particular shot from a tutorial on YouTube and found it easy to do in the end. We added the sounds separately ourselves and keyed in the nuclear explosion with a green screen and Adobe After Effects. We would like to use this at the end of the trailer to leave the audience asking questions and to have the trailer on a cliff hanger.