I just had an odd notion. What if the voice in both was Fury? We know he wants the X-Men as Ultimates in the long run, and I seem to recall Fury having his eye on Beast as a member of the team. He can go intangible so he works as the voice talking to Jean. His pragmatic attitude also matches the voice, and there's no doubt he knows about Jean killing the guys in the helicopter. And expanding on the theory circulating about Beast not being dead, the whole government mutant team thing could have been a round about way of recruiting Beast in total secret. Though I'd rather it wasn't. But he is a possibility for Jean.