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 would likely be stored at Davis-Monthan Air Force Base or be given to other organizations willing to take them. The U.S. Customs and Border Protection has shown interest, but already operate higher-performance Reapers and are having difficulty with operating costs. The U.S. Coast Guard has also shown interest in land-based UAV surveillance. Foreign sales are also an option, but the MQ-1 may be subject to limitations of the Missile Technology Control Regime because it can be armed; export markets are also limited by the Reaper as well. Given the Predator's phasing out and low size, weight, and power availability, the Air Force decided not to look into upgrades to make it more effective in contested environments and found its only use in defended airspace would be to be shot down while drawing fire away from other aircraft. Due to needed airborne surveillance after the Islamic State of Iraq and the Levant (ISIL) invaded Iraq, the Predator's retirement was pushed 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.