Self-Flying Choppers Fight Wildfires So Humans Don't Have To

You might be impatient for a self-driving car that can roll you from the bar to your house when you're too buzzed to drive, but autonomous vehicles have bigger problems to worry about. Since 2000, the fire season has grown longer, and the damage more severe. The US spent more than $2 billion fighting the flames last year--and it lost six firefighters doing it. The solution, according to Lockheed Martin, is taking the human out of the battle. In a series of demonstration flights last week, the defense contractor showed off four unmanned aircraft that join forces to beat back the flames.