With President Kennedy's second term the Space Race took on a new dimension and became another front in the Cold War.
The timeline until the moon landings remains the same as OTL. NASA, under direction from President Hubert Humphrey (1969-1973) developed a multi-pronged approach to space, with a re-usable personnel launcher, the Space Shuttle and a number of rockets, including the ultra-massive Saturn VI and Saturn VII.
Spacelab was established using the "wet workshop" concept, where the upper stages of the Saturn V, VI and VII were converted into workspace. As the Korean War broke, however, Spacelab was subverted by the military. While it remained in name and outward appearance a research station, significant military payloads were introduced.
By 1975 it was re-christened Space Station Freedom, and external space-based radar dishes were affixed. Secondary space stations were created for additional space monitoring of US military targets.
The USSR had effectively lost the space race following the moon landings, but refused to let the US have the ultimate high ground and launched their own space stations in competition.
In 1978 the US Legislature expanded the range of the Air Force, and allocated funding for the Interceptor program, an intercontinental bombing and reconnaissance craft.
In 1980 US reconnaissance stations discovered Russian construction of Okhotnik or Hunter ships, the USSR counterpart to the US's Interceptors.
In 1987 the Russians established the first permanent presence on the Moon at Lunagrad, near the South Pole.
By 1993 the US had established 5 bases, 4 near the North Pole and Tranquility Base near the site of the Apollo landing.
Military and NASA personnel have lived on the moon since the mid-1990s and have been generally sufficient for their dietary requirements since 2005. Until that time payloads were lifted from Earth or the hydroponic support sections of Space Lab.
Space Lab B which was launched after the Interceptor Crisis was gradually constructed out of used stages of the Saturn Rockets, and spins to provide a simulation of gravity. While not the same as that experienced upon the Earth it has proven sufficient to stop the bone and muscle-loss otherwise experienced by NASA crew.