October 1, 2008:  Greece is upgrading its twenty AH-64A Apache helicopter gunships to the AH-64D "Longbow" standard. This will cost over $20 million per helicopter. That will add all weather/night capabilities, a more powerful fire control system, and more powerful engines (increasing max takeoff weight from 8 to 10 tons.) The AH-64D can carry 16 Hellfire missiles, in addition to its 30mm cannon. The AH-64D is easier to fly (because of easier to use controls), and can stay in the air for about two hours per sortie. Max speed is 290 kilometers an hour, cruise is 265 kilometers an hour. Greece has also purchased a dozen AH-64Ds.