On Purple Heart Day, we honor the brave service members who have sacrificed for this nation. (Video: DoD)
World's Largest Aircraft Gets New Life
Footage of the Airlander 10 taking to the sky in 2012, Lakehurst, New Jersey. The Airlander 10, built by British aerospace firm Hybrid Air Vehicles, is due to make its maiden flight in the spring after tests last year successfully showed it was capable of getting off the ground. The 300ft-long (93 metres) Airlander 10 was originally developed as part of a US Army project but was scrapped by military bosses. It is now being converted to provide business and leisure flights in a hangar in Cardington, Bedfordshire. The vessel was filled with 1.3 million cubic feet of helium - enough to fill 15 Olympic-sized swimming pools - in a test run last October and now the engines and fins are being fitted ahead of next month's flight. The craft has already been tested with a successful hover test, with the hull being filled with helium and floated outside the aircraft hanger in November, but this will be the first test once the engines are successfully attached.