Hmm.  Assuming the first Act closes out with the announcement of the return of Stormwatch, then starting off with an action scene in Act 2 would suggest that that action scene should be about Stormwatch doing Stormwatch things, to show how well (or how poorly) the team has come together.  It would also probably be best to at least imply a short timeskip, in that case.<br/><br/>On the other hand, starting off with a Transition Scene would probably work better if the next Act is meant to continue on almost immediately after the end of Act 1.<br/><br/>So, I suppose for me, my answer is that it depends on what sort of plot you're trying to set up. ^^;