On 7 May 2015, according to an internal report prepared by Congressional Research Service, Pakistan has made full payment from its national funds towards the purchase of 18 new F-16C/D Fighting Falcon Block 52 combat aircraft worth US$1.43 billion. Also including F-16 armaments including 500 AMRAAM air-to-air missiles; 1,450 2,000-pound bombs; 500 JDAM Tail Kits for gravity bombs; and 1,600 Enhanced Paveway laser-guided kits. All this has cost Pakistan US$629 million. Pakistan has also paid US$298 million for 100 harpoon anti-ship missiles, 500 sidewinder air-to-air missiles (US$95 million); and seven Phalanx Close-In Weapons System naval guns (US$80 million). Under Coalition Support Funds (in the Pentagon budget), Pakistan received 26 Bell 412EP utility helicopters, along with related parts and maintenance, valued at US$235 million.