Fly crew
（重定向自Flymen）
A fly crew is a group of people who operate a fly system from its locking rail during a theatrical production. The responsibilities of a fly crew include bringing battens in and out, keeping the fly system linesets in balance, and ensuring that the fly system's rope locks are applied when the associated linesets are not moving. Each member of the crew is called a flyman. Large venues will often have several flymen on their fly crews, as well as a fly captain to manage the crew and plan cues for the fly system.