On Now: History Channel Documentary on 9/11 Terrrorists

Terror 9/11: Hamburg
This is an intriguing show. It seems to be quite thorough in documenting and time-lining the steps of the "Hamburg Cell" of terrorists from early 1999 to 9/11. These are the 3 of the 4 pilots.
Has anyone else seen this? I know there are many conspiracies but this looks fairly hard to refute and unbiased.

I will say it looks like the ball was really dropped in 1999 when they arose suspicion while in flight school in FL but nothing was done.

Thoughts on this show?

it was a good show...

i learned that one of the targets was the capital building and not the white house...

I learned that some US custom agents should be... because they allowed Muhammad Attah to enter the US for a second time with an expired visa.

very well put together i thought, very indepth and informative.