There are parts of this that are great and parts that made me want to hit the fast forward button on the remote. Overall, the story is interesting in what it implies but never says until later in the show, however, by that time I felt ho-hum about it and the final "revelation". It was something I had already guessed.
The parts that involved the flying was great but the parts on the ground were draggy and played out too long, hence the final ho-hum I felt. I liked this but I much preferred "Last Exile" and "Yukikaze" both had the angst but were less drawn out. So, if you like a slow pace type show with some flight action then this is for you. If you prefer something more exciting and on the edge of your seat then I'd tell you to pass it by.
Gets a 3 stars out of 5 from me. Those three were for the interesting idea behind the characters, some neat plane designs, and some nice air action but loses two stars because the story just took a bit too long at times.