Well if you look closely you can see tel'taks, al'kesh, and death gliders so the chances are they are either the Lucian Alliance or Jaffa. Most likely the former.My main question is who is it attacking the base and why ? It surely can't be the series' regular villains (if there are going to be any) as my understanding was that this ship isn't in our galaxy or anywhere close (otherwise Odyssey could go pick them up).