Future weapons: The defence tech bros

Defence tech is booming in the US. Start-ups building drones, missiles and AI systems are competing with established companies for a piece of the US defence budget. Are these new participants the future of the defence industry? John Thornhill hears from investors and founders, and we visit the neighbourhood of El Segundo in Los Angeles, dubbed the Silicon Valley of defence tech. Free to read: The age of drone warfare is disrupting the defence industry US defence industry braced for tech shake-up under Trump The appetite for US defence tech i...