Glavnij Operator Elena Serova (front right), a Russian cosmonaut, already knows the EAC instructors from her training sessions at the Gagarin Cosmonaut Training Centre (GCTC). At the start of the OBT, a friendly atmosphere between the instructors, the Glavnij operator and astronauts on board the ISS fosters easy discussion and a very strong work environment on the Space-to-Ground voice loop. Credit: ESA