Meet the next-gen spy plane... a blimp

One company hopes to take blimps to new heights. Southwest Research Institute has developed the HiSentinel 80, an unmanned airship that can potentially stay aloft for 30 days and has a propeller that can be controlled from the ground. Potential future uses include military and scientific missions. Video by: Ryo Ikagami, Summer Delaney (Source: Bloomberg)