Pakistan Air Force fighter jets performed a spectacular aerial display over Rawalpindi and Islamabad on Friday as a rehearsal for an official ceremony scheduled for Sunday to commemorate the first anniversary of what Pakistani leadership describes as a victory against India. The ceremony will be held at the National Monument in Islamabad's Zero Point with top civilian and military officials expected to attend. Flight operations at Islamabad airport will be subject to minor delays on Saturday and Sunday due to the operational requirements of the ceremony.