Members of Pakistan's air force salute as they raise the national flag at the mausoleum of Muhammad Ali Jinnah during Defence Day ceremonies, or Pakistan's Memorial Day, in Karachi, Pakistan, September 6, 2015. Pakistanis are celebrating the golden jubilee of Pakistan Defence Day in memory of the martyrs of the 1965 war who defended the motherland against the powerful Indian Army in the Indo-Pak war. Jinnah is generally regarded as the founder of Pakistan. REUTERS/Akhtar Soomro