Peter Greenberg has the run down PHOTO: A Transportation Security Administration agent works at the security check area inside Terminal 3 at O&apos;Hare International Airport on Nov. 12, 2020, in Chicago. (John J. Kim/ Chicago Tribune/Tribune News Service via Getty Images)<a href="https://www.gettyimages.com/license/1456229785?phrase=airport%20check%20in&adppopup=true"></a><a href="https://www.gettyimages.com/license/1246194596?phrase=airport%20check%20in&adppopup=true"></a>

Peter Greenberg has the run down PHOTO: A Transportation Security Administration agent works at the security check area inside Terminal 3 at O'Hare International Airport on Nov. 12, 2020, in Chicago. (John J. Kim/ Chicago Tribune/Tribune News Service via Getty Images)

Peter Greenberg has the run down PHOTO: A Transportation Security Administration agent works at the security check area inside Terminal 3 at O'Hare International Airport on Nov. 12, 2020, in Chicago. (John J. Kim/ Chicago Tribune/Tribune News Service via Getty Images)<a href="https://www.gettyimages.com/license/1456229785?phrase=airport%20check%20in&amp;adppopup=true" rel="noopener noreferrer"></a><a href="https://www.gettyimages.com/license/1246194596?phrase=airport%20check%20in&amp;adppopup=true" rel="noopener noreferrer"></a>

=TRAVEL: Lessons learned from recent airline meltdowns

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=TRAVEL: Lessons learned from recent airline meltdowns

=TRAVEL: Lessons learned from recent airline meltdowns