The Pressurized Mating Adapter 2 (PMA 2 awaits prelaunch processing in the Space Station Processing Facility.

The Pressurized Mating Adapter 2 (PMA 2), at left, part of the first International Space Station (ISS) element to be launched from the U.S., awaits prelaunch processing in the Space Station Processing Facility after its arrival at KSC. PMAs 1 and 2 attached to a component called Node 1, shown in background at far right, to form the first U.S.-launched ISS element. The Node 1/PMA assembly will provide key connecting points in orbit for other Space Station modules and for docking of the orbiter with the ISS. PMA 1 will provide the interface between U.S. and Russian elements of the Station; PMA 2 will provide a Shuttle orbiter docking area. The Node 1/PMA assembly is targeted for liftoff aboard the Space Shuttle Endeavour on STS-88 in July 1998.