Data Tracker Special Order Q.

No, because it is an Irregular Order, spending an Irregular order on a trooper will drop them from the Fireteam (and because they need to be the leader to spend the order, cancel the Fireteam too).

 

Indeed, but that's a special caveat unique to Tactical Awareness.

 

As colbrook says, that’s because Tactical Awareness says you can do that:

• In addition, if the owner of this Special Skill belongs to a Fireteam and is designated as the Team Leader, then this Order can be used to activate the Fireteam as if it were a Regular Order.

There is no equivalent text for the Datatracker’s Order.