Launch Complex 15 originally broke ground in 1957, as part of an expansion by the
United States Air Force to
Missile Row, which would give it the ability to launch the
HGM-25A Titan I alongside the four existing
SM-65 Atlas pads. LC-15 was built as the southernmost of the four Titan pads of the subsection, joined by
LC-16,
LC-19, and
LC-20 to the north. The pad's construction saw its completion in summer 1958, and hosted its inaugural launch with the Titan I's maiden flight on February 6, 1959. In this initial configuration, LC-15 hosted ten Titan I launches, all of them successful and being used for testing
reentry vehicles as well as the missile itself. Following the last of the Titan I launches in September 1960, LC-15 underwent conversion to support the Titan I's successor, the
LGM-25C Titan II. In October 2024, following the accidental destruction of an RS1 to be used in the second flight, ABL announced that they would be leaving the commercial launch market in favor of perusing missile defense. This was made official the next year, when they rebranded themselves as
Long Wall, announcing that they will convert the RS1 into a target missile named the RSX. == Launch statistics ==