They do admit that on 9/11 the hijackers probably did turn off their transponders when the 9/11 Commission reports they did. However, for them, this isn't good enough because apparently they think the U.S. military should have used... satellites designed to monitor orbiting debris?
The 9-11 commission failed to consider the fact that the US military has more than just ground radar at their disposal. In 2006 a golf ball was hit off the International Space Station. New Scientist magazine reported that the ball was too small to be tracked by ground radar, but noted that,
“US military radar can track space debris as small as 10 centimeters across, and can sometimes see things as small as 5 centimeters wide if it is in just the right orbit.”
Man, five years of slow news days have taken a real turn on these guys.