There was also an interesting part that showed the military
Spoiler:
trying to customize a mecha like Jin and Jou's (called Gladiators). It appears that though these mecha are extremely powerful, ordinary soldiers can't use them, only "those monsters in Phantom" which makes me think Phantom soldiers undergo some kind of modification that makes them tougher. The military is worried that Phantom may gain too much power, and so they try to customize the Gladiators for their own needs, without much success.
Anyway, as for what happened to Sana, it seems to me that the plane they were on belonged to the government/military (military government?) and Phantom, who also want Sana for themselves, tried to kidnap her, but Jin kidnapped her for himself. I wonder why she's so important - I'm sure even Jin has plans with her. (That said, I find their relationship really sweet so far.
)
I also really like the music and how it's used - sometimes it even has a Kanno-ish feel. And despite the often rather bad CG I really like the technology - it has a touch of reality that's quite rare in anime.
But my favorite part of this episode all involved the captain of the pirate ship, Kouji.
I'm sure that he has a serious agenda, but at the same time there's just something about this guy that suggests that he's not taking himself entirely seriously and that he's having fun running around playing pirate. (Also, he's not a good cosplayer - he's wearing his kimono the wrong way, as Sana points out.
)