He points out that Apple would be an especially deadly partner in the radio race because it has already stored ample listening data from its music-recommendation engine that could power a Pandora-like radio stream.
Martin's shooting set off a national outcry over race issues and stand-your-ground laws, which allow people to use deadly force if their lives are in danger.
But the discovery of stockpiles of the far more deadly German nerve gas, left in Europe after the Second World War, pushed Porton Down into a race against time.
Martin's death has triggered a nationwide debate about race in America and Florida's "stand your ground" law, which allows people to use deadly force anywhere they feel a reasonable threat of death or serious injury.