The USAF ordered a total of 259 Predators, and due to retirements and crashes the number in Air Force operation was reduced to 154 as of May 2014. Budget proposals planned to retire the Predator fleet between FY 2015 and 2017 in favor of the larger MQ-9 Reaper, which has greater payload and range. The Predators were to be stored at Davis-Monthan Air Force Base or given to other agencies willing to take them. The U.S. Customs and Border Protection showed interest, but already had higher-performance Reapers and were burdened with operating costs. The U.S. Coast Guard also showed interest in land-based UAV surveillance. Foreign sales were also an option, but the MQ-1 is subject to limitations of the Missile Technology Control Regime because it can be armed; export markets are also limited by the existence of the Reaper. Given the Predator's pending phase-out and its size, weight, and power limitations, the Air Force decided not to pursue upgrades to make it more effective in contested environments, and determined its only use in defended airspace would be as a decoy to draw fire away from other aircraft. Due to airborne surveillance needs after the Islamic State of Iraq and the Levant (ISIL) invaded Iraq, the Predator's retirement was delayed to 2018. MQ-1s will probably be placed in non-recoverable storage at the Boneyard and not sold to allies, although antenna, ground control stations, and other components may be salvaged for continued use on other airframes.