Quoted:
From my recollection of piss test winners in regular grunt units, it was almost always a one way ticket to the first CIV DIV if you already came in with a waiver or second pop, demotion for first time offenders or high performers but unit retainment as second award PFC.

Losing trust as an armed combatant is already a thing.  Losing trust as someone who has HALO and combatant diver as a job description but buys cocaine from Chewie the street vendor and recreationally snorts a couple lines between missions is unfathomable.