Tropical storm caught with drones

NASA Spy Drone catches tropical storm turning into a hurricane. The surveillance drones, America’s largest, fly in the calmer altitudes of around 60,000 feet above the ground, where they can wait for over a day, cameras pointed down, watching. The same characteristics that make a Global Hawk a useful tool of war against insurgents also lend its power as a storm watcher. NASA has a Global Hawk, painted bright white and not Air Force gray--and last week it flew over a tropical storm Gaston, determining it was, in fact, a hurricane.