to 9-11 sensitivities. It continues: Web site blog comments furiousat best. Twitter search reveals tweetsregarding two F-16's chasing commercial airliner. Rate of 1 tweet per minute and growing. No positive spin is possible. Admit mistake, it concludes. In another e-mail, USAF Col. Scott M. Turner, commander of the Presidential Airlift Group, was doing just that. Again, my apologies sir. Real intent here was to honor NYC, not cause mass chaos, it reads. The next day, the Northern Command's internal memo included depictions of New York's three major tabloids featuring the headlines, Scare Force One, Just Plane Stupid ! and How Dumb Was This ! The photographs released Friday, meanwhile, show the presidential aircraft making a steep bank, seemingly well beyond the 30-degree maximum for Boeing 747s carrying passengers, according to one airline pilot consulted by CNN. That may have contributed to the anxiety on the ground. The Pentagon estimated the cost of the flight at $328,835, which includes the Boeing aircraft and the two fighter jets that accompanied it. But, they said, the hours would have been flown regardless, and the expenses would have been accrued on a different mission. The VC-25 aircraft is designated Air Force One only when the president is aboard. President Obama was not on the plane during the photo op. After the incident, Louis Caldera, the director of the