Uses a special gun designed to inject a ray of nanites into an area that will repair any damaged tissue.
- Level 1:
- Enables Heal Gun, which heals friendly marines for 40 HP within a 3.0m radius. 25 second cooldown.
- Level 2:
- Heal Gun now heals for 45 HP within a 3.2m radius. 23 second cooldown.
- Level 3:
- Heal Gun now heals for 50 HP within a 3.4m radius. 21 second cooldown.
- Level 4:
- Heal Gun now heals for 65 HP within a 3.6m radius. 19 second cooldown.
- Level 5:
- Heal Gun now heals for 80 HP within a 3.8m radius. 17 second cooldown.