ISLAMABAD - Pakistan Air Force (PAF) has received four more F-16s jet fighters at a ceremony held at PAF Base Mushaf, Sargodha on Monday. Chief of Air Staff, Air Chief Marshal Tanvir Mahmood Ahmed received the jet fighters from Lt-Gen Martin E Dempsey, acting Commander US CENTCOM. Addressing the ceremony, Tanvir said that the batch of the aircraft are equally good and will significantly augment its combat capability further in defending the aerial frontiers of Pakistan. A contingent of high-ranking officials from Air Forces of Pakistan and United States were also present on the occasion. So far, fourteen F-16 aircraft have been delivered to Pakistan with first two delivered in December 2005, two more in July 2007, two in February 2008, four in June 2008 and the final four on Monday. Last week, the US diverted $230 million from counter-terrorism programmes to the upgrade of the country's F-16 fighter jets. Pakistan needs $891 million to upgrade its fleet of the ageing F-16s, to be paid out of the national funds. Islamabad had asked the Bush Administration to divert $226 million from the overall military aid programme in financial year 2008 and $140 million in 2009, making up the balance from its own resources. The total F-16 package, including both new and old aircraft, will cost of $3b.