 Likewise, interviews and surveys of flight controllers indicate that mission teams are commonly concerned with team member coordination and communications, and that interpersonal conflicts and tensions do exist.Because of a lack of empirical evidence from spaceflight research, much of the evidence surrounding cohesion and performance comes from non-space domains such as aviation, medicine, the military, and space analogs.Some reports have estimated that "crew error" in aviation contributes 65% to 70% of all serious accidents.