The actual mechanism is coordinated between joint operations command, who are employing the forces in theatre, and the units from which they are generated back home. They all have the same standard, and they all go through a decompression, but it's different depending on what specific part of the mission they have been on, what rotation cycle they are on, and who their host of origin is. The air components go through a slightly different process than the special operations folks, and—
On December 1st, 2016. See this statement in context.