The TF-620 is built from the Starport and is a Battlefield Construction unit. This unit is essentially a combination between a manufacturing center and an observation post.

The nomad is also much like a mix between a lightweght air scout, an SVC and a sensor tower. The unit can detect cloaked or burrowed enemies and can construct temporary defense structures on the fly.

The nomad's ability to quickly setup these semi-permanent defense strucutures and provide detection for cloaked units make it an excellent choice for scouting and expanding.