pressure-fed Kestrel engine with of vacuum thrust and a vacuum specific impulse of 330 s. Reusability The first stage was originally planned to return by parachute to a water landing and be recovered for reuse, but this capability was never demonstrated. The second stage was not designed to be reusable. Launch sequence At launch, the first stage engine (Merlin) is ignited and throttled to full power while the launcher is restrained and all systems are verified by the flight computer. If the systems are operating correctly, the rocket is released and clears the tower in about seven seconds. The first-stage burn lasts about 2 minutes and 49 seconds. Stage separation is accomplished with explosive bolts and a pneumatically actuated pusher system. The second stage Kestrel engine burns for about six minutes, inserting the payload into a low Earth orbit. It is capable of multiple restarts. Pricing SpaceX quoted Falcon 1 launch prices as being the same for all customers. In 2005 Falcon 1 was advertised as costing $5.9 million ($7.3 million when adjusted for inflation in 2015). In 2006 until 2007 the quoted price of the rocket when operational was $6.7 million. In late 2009 SpaceX announced new prices for the Falcon 1 and 1e at $7 million and $8.5 million respectively, with small discounts available for multi-launch contracts, and in 2012 announced that payloads originally selected as flying on the Falcon 1 and 1e would fly as secondary payloads on the Falcon 9. Historically, the Falcon 1 was originally planned to launch about to low-Earth orbit for but later declined to approximately as the price increased to approximately . It was SpaceX's offering intended to open up the smallsat launch market to competition. The final version of the Falcon 1, the Falcon 1e, was projected to provide approximately for US$11 million. Several years ago, SpaceX was going to open up the smallsat launch market with the Falcon 1, which originally was to launch about 600 kilograms to LEO for $6 million; the payload capacity later declined to about as the price increased to around $9 million. Later, the Falcon 1e was to provide approximately for $11 million, but the company withdrew the vehicle from the market, citing limited demand. Launch sites All flights were launched from Kwajalein Atoll using the SpaceX launch facility on Omelek Island and range facilities of the Reagan Test Site. Vandenberg AFB Space Launch Complex