Quis custodiet ipsos custodes? [Who watches the watchmen?]

The moment Jack Shephard and John Locke stepped out the door to the armory Sayid Jarrah knew this Henry Gale's life was in his hands. His heart quickened in pace despite his cool exterior. All the twitches and fidgets of anxiety had been worn out of him so only his vitals racing under his skin. Not for one minute did he believe this man, but he would question him none-the-less.

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( FLASHBACK: the heat of the Iraqi desert was sweltering. )