SpaceX originally intended to launch their first launch vehicle, the Falcon 1, from Space Launch Complex 3 West (SLC-3W) at Vandenberg Air Force Base. SLC-3W was modified by SpaceX to support the Falcon 1, and the Falcon 1 was erected on the pad in 2005. Problems arose when SpaceX was unable to obtain sufficient launch window availability because the pad would overfly other Air Force pads that were frequently left occupied for weeks or months at a time, thus severely restricting SpaceX launches. Ultimately, this launch pad was never used for orbital launch, although it was used for a number of ground tests. SpaceX proceeded to then build a launch facility in the northern Pacific Ocean at the Ronald Reagan Ballistic Missile Defense Test Site, on Omelek Island, a part of the Kwajalein Atoll, Marshall Islands. SpaceX began launching Falcon 1 rockets from Omelek in 2006. Falcon 1 Flight 4 was the first successful privately funded, liquid-propelled launch vehicle to achieve orbit, and was launched from Omelek Island on 28 September 2008, followed by another Falcon 1 launch on 13 July 2009, placing RazakSAT into orbit. SpaceX originally planned to upgrade the Omelek launch site for use by the Falcon 9 launch vehicle, but later cancelled their plans to do so, and have since disassembled the entire installation. In December 2010, the SpaceX launch manifest listed Omelek (Kwajalein) as a potential site for several Falcon 9 launches, the first planned for as early as 2012. The "Falcon 9 Overview" document also offered Kwajalein as a launch option in 2010. Since then, the FAA Environmental Impact Report of May 2014 lists this site as non-operational and returned to its original state, to no longer be used, "Five Falcon 1 launches occurred at Omelek Island, Kwajalein Atoll. After these launches of the Falcon 1, the site was no longer needed and SpaceX closed the site and returned the property to pre-launch conditions". All Falcon 1 launches took place at this location, five launches from 2006 to 2009. SpaceX abandoned Omelek when Falcon 1 was retired, due to the expense of logistics. SpaceX has two rocket test facilities for vertical takeoff, vertical landing rockets: the SpaceX Rocket Development and Test Facility in McGregor, Texas and a leased test facility at Spaceport America in southern New Mexico. All SpaceX rocket engines are tested on rocket test stands, and low-altitude VTVL flight testing of the Falcon 9 Grasshopper v1.0 test vehicle are done at McGregor.