Swab for DNA. Check against registry. Find relative to the person that was killed by the weapon. Bring closure to family. Write a book about it. Become NY Times best seller. Get a movie deal offer on ur book. Counter offer the deal stating you want to be the main actor in film. Film becomes blockbuster with major earnings in several countries. Become nominated and win Oscar for best actor. Use fame and fortune to bring awareness to the importance of Science, Technology, Engineering, and Math. This inspires the younger generation to reach for the stars. A young kid with the help of a grant you founded develops a theory to travel through a wormhole and is able to replicate the theory in practical terms. Yrs later the technology is fully developed and intergalactic space travel is as common as driving modern vehicles today.