CapCom

Spacecraft Communicator (CAPCOM) 
Generally, only the spacecraft communicator communicates directly with the crew of a crewed space flight. The acronym dates back to Project Mercury when the spacecraft were originally termed a "capsule." It was felt important for all communication with the astronauts in space to pass through a single individual in Mission Control. That role was first designated the capsule communicator or CAPCOM and was filled by another astronaut, often one of the backup- or support-crew members. It is believed that an astronaut is most able to understand the situation in the spacecraft and pass information in the clearest way.
For long-duration missions, there is more than one CAPCOM, each assigned to a different shift team. When non-astronauts are communicating directly with the spacecraft, CAPCOM acts as the communications controller.
Rollie Crane acts as CAPCOM for the Antares mission.
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