I already repped you once today.

You're correct, I should have been clearer.
(there's also Enhancement that activates mid-action)

EDIT : Got it.

So I have a further question the, as this is the way we've always played it:

Figure A has the SHIELD TA.
Figure B has Running Shot, and is Adjacent to A.
Figure A takes the Power Action to increase Figure Bs Damage.
Figure B picks up Figure A, and makes a Running Shot Attack, placing Figure A down at the end of the move portion, before making the Attack roll.

Is that legal?

Not at all. The power action is given when the figure makes the attack.

No.

"S.H.I.E.L.D.
When a friendly character makes a ranged combat attack, you can give any number of friendly characters adjacent to the attack and using the S.H.I.E.L.D. team ability either a free action or a power action (but not both) before making the attack roll: For each character given a free action, modify the attacker’s range by +1; for each character given a power action, modify the attacker’s damage value by +1."

The team ability is used before B makes a ranged combat attack, that is after being given the ranged combat action. At this point, A has been carried and cannot be given a non-free action.

OK, thanks for the clarification.