You may expend your special armor to resist a consequence from detection or security measures, or to push yourself for a feat of athletics or stealth.

When you use this ability, tick the special armor box on your playbook sheet. If you "resist a consequence" of the appropriate type, you avoid it completely. If you use this ability to push yourself, you get one of the benefits (+1d, +1 effect, act despite severe harm) but you don't take 2 stress. Your special armor is restored at the beginning of downtime.