About 15 floors down from the top, it looks like it's glowing red," the pilot of one helicopter, Aviation 14, radioed at 10:07 a.m. "It's inevitable. Seconds later, another pilot reported: "I don't think this has too much longer to go. I would evacuate all people within the area of that second building." Those clear warnings, captured on police radio tapes, were transmitted 21 minutes before the building fell, and officials say they were relayed to police officers, most of whom managed to escape. Yet most firefighters never heard those warnings, or earlier orders to get out…And the police and fire commanders guiding the rescue efforts did not talk to one another during the crisis….. From the first moments to the last, their efforts were plagued by failures of communication, command and control.