劇中有兩個關於肅清的說法，兩者均是相差不遠，分別由Mikhail Bakunin和Ben Linus說出。
The DHARMA Initiative was apparently prepared for an attack by the Hostiles of the Flame, which they referred to as an "incursion on the station." The Flame was rigged with explosives and in the event of an incursion, the operators of the station were instructed to enter the number 77 into the station computer, which would trigger the detonation. Template:Crossref
The DHARMA Initiative was also well armed, as indicated by the existence of armories at both the Swan and the Hydra stations. There were also a number of firearms seen at the Barracks during Ben's flashback. Template:Crossref
- The exact year that Purge occured was not mentioned during Ben's flashback in ""; however, Horace Goodspeed told Locke in a dream that he had been dead for twelve years. Assuming that this is correct, it places the Purge in 1992. Template:Crossref
- In an EW.com article published on March 6th, 2007, when asked for a 10-word teaser about "", Damon Lindelof replied that only a one-word tease was required: "Purge."
- The term "purge" in politics means to "remove people considered by the group in power to be 'undesirable' from a government, political party, a profession, or from community or society as a whole, often by violent means." The term is often associated with the totalitarian Stalinist and Maoist regimes.
- Lost: The Complete Third Season (DVD) commentary revealed that the mechanism for the Purge at the Barracks was different from the mechanism Ben used in the van. The gas canister was added in post-production to give Ben a more active-role in his father's death. The original plan was for something to happen more-or-less Island-wide to cause the Purge.
- This mass-purging, rather than a series of individual acts, was later confirmed by Charlotte's statements while neutralizing the Tempest. Template:Crossref.
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|Pre-crash events||Basra Incident • Car accidents • Collapsing deck accident • Count to five • Tampa Job|
|Arrivals to the Island||Mid-air break-up • Sailing race • Science expedition • Parachute|
|Dreams and visions||Charlie's dream • Claire's dream • Desmond's flashes • Eko's dreams • Locke's dreams|
|Various Island events||Distress signal • Fires • Pillar of smoke • Whispers • Major battles|
|Others and DHARMA events||Discharge • The Incident • Lockdown incident • The Purge • Push the Button • Supply drop • System Failure|