The thing I can't figure out is, if the city ran out of power and the force field collapsed (or almost did) causing it to rise the surface, what is holding it up?<br /><br /><br />And why didn't Sheppard take that one weapon that he stabbed that one wraith with.<br /><br />My guest is while the wraith can regenerate and seem to be able to do it quicker when "feeding", their regeneration probably slows down the more wounded they are and the longer its been between meals.<br /><br />But why did the one wraith die, she had just feed? Maybe the weapon?