Pakistan Air Force cadets stand at the mausoleum of the country's founder Mohammad Ali Jinnah during a ceremony to mark the country's Defense Day in southern Pakistan's Karachi, Sept. 6, 2016. (Xinhua/Masroor)
Pakistan Air Force cadets stand at the mausoleum of the country's founder Mohammad Ali Jinnah during a ceremony to mark the country's Defense Day in southern Pakistan's Karachi, Sept. 6, 2016. (Xinhua/Masroor)