A useless important thread

[CD5Passion]

this shit always bothered me
8:13 Flight 11 disobeys air traffic instructions and turns off its transponder.
8:40 NORAD command center claims first notification of likely Flight 11 hijacking.
8:42 Flight 175 veers off course and shuts down its transponder.
8:43 NORAD claims first notification of likely Flight 175 hijacking.
8:46 Flight 11 hits the World Trade Center north tower.
8:46 Flight 77 goes off course.
9:03 Flight 175 hits the WTC south tower.
9:16 Flight 93 goes off course.
9:16 NORAD claims first notification of likely Flight 93 hijacking.
9:24 NORAD claims first notification of likely Flight 77 hijacking.
9:37 Flight 77 hits the Pentagon.
10:06 Flight 93 crashes in a Pennsylvania field.

how the hell did those planes not get shot out of the sky, I mean for gods sake they had to know that planes were off course or weren't responding to air traffic control.