Threat

During UNIT's golden period, their knowledge on threats to humanity grew exponentially. (PROSE: UNIT History: Fighting the unknown) UNIT Staff Sergeant A. Frederick believed a de-emphasis on the "exact nature of threat and potency of clear-up" was necessary during Operation Mannequin. (PROSE: Operation Mannequin)

By 2007, a red poster with a white header reading "UNDER THREAT" was pinned to a board in the Deffry Vale High School staff room. (TV: School Reunion)