Ocean-spanning drones could attack the US from Africa

Drones capable of carrying explosives to countries thousands of miles away could be available in just five years, according to an expert. These terror drones could fly from Africa to the US in just over a day, a top US defence adviser told the Pentagon. Many companies are chasing a new commercial market and pushing this technology forward which means in the next few years they could become widely available. The Greased Lightening drone (pictured) can fold eight out of its ten propellers down to reach optimum efficiency. A company called Advanced Aircraft Company has created a drone called Greased Lightening which combines the best bits of drone and aeroplane design.