Read 'Lockheed hails progress on hypersonic military aircraft' here: bit.ly1V1IrhGbr br ►Subscribe to the Financial Times on YouTube: br Flying one of the world’s fastest and most sophisticated weapons is usually a ride reserved for military personnel and dignitaries. Carola Hoyos reports from Saab’s headquarters in Sweden on what it is like to fly in one of their Gripen fighter jets.