This is staggeringly incorrect. First, this unnamed reporter must be some kind of an idiot because nearly everyone had the same "a ha" moment when the second plane hit that this was no accident, this was a terrorist attack.
Secondly, and much more importantly, the long list of references that official agencies were not only aware that such an attack could occur, but had discussed, planned for and created exercises around just such an event.
In fact, the 9/11 Commission Report addresses several of these circumstances. Before you tell me to post all of the various references, please consider doing a good amount of research on the subject. This info is extremely easy to find and quite specific. Unfortunately, debunkers debunk, or at least try to. There is no mea culpa in your language, no "my bad", no "I never knew that". This is the difference between debunking and research.