Engineer (Tiberian Twilight)

"The engineer has received much more focus in C&C4, becoming a multi-functional unit that can fill several roles. Though fragile, the engineer can heal any nearby units, even from inside of transports and garrisons. Both engineers use a low-damage, fast-firing, area of effect weapon especially good at destroying enemy mine fields. Engineers can detect stealthed and burrowed units, traverse cliffs, and capture the husks of large units as well."

- Developer Q&A #6