The Health Regeneration Pack used by the Juggernaut class.
Health Regeneration is a new feature in the Tribes franchise introduced in Tribes: Ascend. After taking damage, players' health will regenerate to full after a delay. Using an Inventory Station will force regeneration to start early (unless it is a Call-In station). Taking damage while regenerating will halt the process. Many classes have armor upgrades which allow faster regeneration.