from Scientology

A Potential Trouble Source is a person who while active in Scientology or a pc (pre-clear) remains connected to a Suppressive Person or Group.

A PTS who fails to either handle or disconnect from an SP is committing a Suppressive Act, and may themselves be considered a Suppressive. A Suppressive may be considered “Fair Game” and treated as a sub-human.

PTS type 3 is a person suffering a psychotic break-down.