Echelon circuit
From Tardis Wiki, the free Doctor Who reference
The echelon circuit was a circuit present in the Doctor's TARDIS. Activation of the echelon circuits would initiate Security Protocol 712. (TV: Before the Flood)
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This page was last edited on 19 April 2017, at 23:21 (UTC).Last edited: 23:21, 19 April 2017 (UTC)
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