Exercise Amalgam Virgo
F-16 Fighting Falcons, like the one shown here, sit ready to deploy at a moment's notice to respond to possible or real air threats over the United States. Continental U.S. North American Aerospace Defense Command Region officials will be conducting Exercise Amalgam Virgo 10-Miami on Jan. 28, 2010, to test command and control and execution procedures for air defense for Super Bowl XLIV. (U.S. Air Force photo/Master Sgt. David Neve)