BIO: Robert Mark, a 35-year aviation-industry thought leader, is CEO of CommAvia, a marketing-communications group that delivers leading edge media to the aviation industry. Mark, a commercial pilot who has logged 7,000 flying hours in airliners and business-jets, as well as dozens of small training aircraft, is uniquely poised to write about the air traffic control tower issue. He spent 10 years as an air traffic controller and supervisor with the FAA. He also writes the award-winning industry blog, Jetwhine.com. He can be reached at firstname.lastname@example.org.