The ISS Joint Airlock, scheduled to arrive on Flight 7A, provides access to the vacuum of space for EVA capability. The Joint Airlock is the prime site for EMU-based EVAs and is capable of supporting Orlan-based EVAs. It is connected to the starboard side of Unity by the Space Station Remote Manipulator System (SSRMS), also known as the Space Station robot arm. The two distinctive components of the Joint Airlock are the Equipment Lock and the Crew Lock.