A special feature on the UK Steelbook edition of Prometheus reveals that Weyland's mentor was Eldon Tyrell, creator of the replicants in Blade Runner. It makes about as much sense as anything else in Prometheus.
Check out these guns from famous Sci-fi Films. Above you'll see guns from Forbidden Planet, Star Trek, Star Wars, Alien and Blade Runner. See more famous movie guns from Frederico Mauro.