Footage of a NORAD surveillance blimp after it became untethered from its mooring in Maryland, US. <br /><br />Two F-16 jets were reportedly scrambled to track the NORAD (North American Aerospace Defense Command) spy aircraft, when it went on the loose on October 28. <br /><br />However, the blimp was quickly got under control and brought down.<br /><br />The footage in this video was filmed by nine-year-old Aidan Hock.
