Given the fighting in Libya, there are calls to enforce a no-fly zone over the country to keep the government from bombing and strafing rebellious citizens. Wednesday, the Arab League says it could join the African Union in imposing flight restrictions if the fighting continues. Host Michele Norris talks with retired Air Force Lt. Gen. David A. Deptula, who serves on the Center for a New American Security board of advisers, about how that might work — and some of the complications.