No longer enemy combatant
No Longer Enemy Combatant (NLEC) is a term used by the U.S. military for a group of 38 Guantanamo detainees whose Combatant Status Review Tribunal (CSRT) determined they were not "enemy combatants". None of them were released right away.
Source: Wikipedia — No longer enemy combatant (CC BY-SA 4.0)