The Pressurized Mating Adapter PMA -2 for the International Space Station ISS awaits being mated with Node 1.

The Pressurized Mating Adapter (PMA)-2 for the International Space Station (ISS) awaits being mated with Node 1, the space station’s structural building block, in KSC’s Space Station Processing Facility. This PMA, identifiable by its bright red ring, is a cone-shaped connector to Node 1, which will have two PMAs attached once this mate is completed. The node and PMAs, which together will make up the first element of the ISS, are scheduled to be launched aboard the Space Shuttle Endeavour on STS-88