Guglielmi says Hartman got through a federal Transportation Security Administration checkpoint at a domestic terminal without a ticket before taking a shuttle to the worldwide terminal. Her record with sneaking onto airplanes dates back at least four years.
How did she manage it this time?
After arriving back in the USA on Thursday (18 January), Hartman was charged with a felony count of theft and one misdemeanour for trespassing.
Prosecutors in California in 2015 reported an even higher number, saying she had attempted to breach airport security at least 18 times, according to San Francisco magazine.
After Hartman joined the security line and was screened by the TSA, she tried to board a flight to CT around 2 p.m., attempting to hide herself behind a passenger who was waiting in line, Simonton said.
That year she spoke to WMAQ, a television station in Chicago, and said it was time to stop trespassing.
Chicago police said Marilyn Hartman, 66, of Grayslake, Ill., apparently got through airport security without a boarding pass or passport Sunday, flew to the London airport and was detained by British Customs officials when she landed Monday morning.
Hartman was charged with one misdemeanor count of criminal trespass and one felony count of theft greater than $500, Chicago police said in a news release. Simonton said Hartman tried to dart past the passenger but was stopped by the gate agent, who told her to sit down.
"Upon learning of the incident, TSA and its aviation partners took immediate action to review security practices throughout the airport", the agency said Friday. I don't want to help the enemy. She was credited for 23 days already served and could have spent less than six months in jail if given credit for good behavior, according to court records.
Chicago police say Marilyn Hartman has a history of these sorts of incidents, and has been caught a couple of times in the past. Because she poses neither a harm to herself or others, Hartman is not a candidate for mental health detention. She has also been told to undergo psychiatric treatment.
Hartman was at the Cook County Jail because she did not have a place to stay in Cook County, which was a requirement for the electronic monitoring, Sophia Ansari, press secretary for the Cook County Sheriff's Office, said. She must also wear an ankle tracking device until the conclusion of her case.