WTF

2 first eps were totally awesome in interesting, now third ep is AKA Strike Witches ?
Can I fucking know how it was possible that USA fended off the BETAs since they were the first to be attacked and BETAs swarmed all over the USA ?
Can I know what the fuck happened in the 4 years between ep 2 and ep 3 ?
If the next episode doesn't give me answers, i drop this. First 2 episodes were simply great, they marked a great dark atmosphere of alien invasion only to be ruined by third episode.
Totally disappointed.