How do you defend yourself against laser weapons when they fire at the speed of light? BAE Systems has an idea. It's developing Laser Developed Atmospheric Lens technology that, as the name suggests, uses lasers to temporarily ionize the atmosphere to create lens-like structures. If you're facing a laser attack, you just have to form a lens to serve as a refractive shield. The technology could protect both aircraft and land-based forces from deadly blasts, and it could fill other roles as well.