Some mass media know the things that happen, like in case of WTC 7. Some high controls of USA know this terrorist attacks and offer information to the mass media before time. It is not normal and this increases my doubts of the official version of 9/11.
http://es.youtube.com/watch?v=N1LetB0z8_o
http://jonesreport.com/articles/270207_bbc_lost_response.html
What is indicating the arrow in red is something that it was possible to to see in both collapses: the exit of great quantity of thin powder of the Skylobbies of each one of the towers. This it is the collapse of the Tower South and this first one Skylobby (floor 44). The Skylobbies were floors of double height, without windows and specially reinforced, since it is possible to to see in the following photos
http://img109.imageshack.us/img109/3832/a0069b3towerexplo1explomo9.jpg
http://farm1.static.flickr.com/150/392941378_f07876ccef_o.jpg
http://farm1.static.flickr.com/159/391559307_29569ba6be_o.jpg
Like explaining that the floor especially reinforced, it has signs of collapse (the powder -> the internal collapse) before that the top not reinforced floors?