Scan this barcode to access this page with your mobile phone.

Inflatable aircrafts have been around since the Montgolfier brothers developed the first untethered hot-air balloon in 1782, but 200 years later, they are making a high-tech resurgence for both civilian and military use. U.S. aerospace company Lockheed Martin's version is called the P-791 airship, which it hopes is about to take off. Rob Muir reports.

Rob, Muir, reports, Lockheed, Martin, presents, airship, of, the, future, p791