The headsets will be used in two modes: Remote Expert Mode and Procedure Mode. Remote Expert Mode uses Skype to let ground operators see through the eyes of an astronaut, letting them give instructions and even draw on the augmented reality world that the crew member is seeing. Procedure Mode puts special illustrations on top of objects in the space station, potentially reducing the amount of training needed and helping out astronauts on long missions deep into space where they might not be able to talk to ground control.