In 1971, the Hellenic Air Force ordered brand new F-4E Phantoms, with deliveries starting in 1974. In the early 1990s, the Hellenic AF acquired surplus RF-4Es and F-4Es from the Luftwaffe and U.S. ANG.[97][98] Following the success of the German ICE program, on 11 August 1997, a contract was signed between DASA of Germany and Hellenic Aerospace Industry for the upgrade of 39 aircraft to the very similar "Peace Icarus 2000" standard.[19] The Hellenic AF operates 34 upgraded F-4E-PI2000 (338 and 339 Squadrons) and 12 RF-4E aircraft (348 Squadron) as of September 2013.