WGN radio has talked about this story often and it does raise the question of airline safety procedures.
This is not the first time Hartman has tried to fly without a ticket. She was caught trying to sneak onto flights at least ten times in 2014 and 2015, eventually spending a year in jail, the New York Post reports, and said she “may have” boarded a plane without buying a ticket eight times during an interview with NBC Channel 5 in December 2015. Prosecutors in Cook County, Illinois, called Hartman a “serial stowaway” in a 2015 court filing.
This time, she used a number of tricks to avoid detection. She allegedly began by hiding her face with her hair to sneak past two TSA agents who were monitoring a security line at O’Hare International Airport. Once she got past security, Hartman attempted to board a plane to Connecticut, but she was told to sit down after trying to move around another passenger waiting in line, the Tribune reports.