In this Thursday, Sept. 12, 2013 photo, long lines of passengers wait in Concourse D of Baltimore-Washington International Thurgood Marshall Airport, in Linthicum, Md., after many flights were either delayed or canceled because of a lightning strike.  (AP Photo/The Capital, Paul W. Gillespie)

FAA to examine airport towers

A lightning strike that injured an air traffic controller at Baltimore’s main airport has exposed a potential vulnerability at airport tower…