http://www.freep.com/longform/life/...isa-db-cooper-grayling-michigan-fbi/75886946/ GRAYLING, Mich. (WZZM) -- There was once a time when there were no security or identity checks on domestic flights in the United States. There were no security checks on luggage, and there were no frisks or cavity searches before boarding. You could literally buy a ticket and board a plane with no questions asked. That practice is no longer possible because airport security has changed drastically in the last 45 years, and especially since the September 11, 2001, attacks. Today, if you choose to travel via the air, you're asked to arrive at the airport several hours before your flight due to long lines for aggressive security checks by the Transportation Security Administration (TSA). The TSA was created as a part of the Aviation and Transportation Security Act, which was passed by the 107th U.S. Congress and signed into law by President George W. Bush on November 19, 2001 – a little more than two months after the September 11 attacks. The security hurdles air travelers face today present quite a juxtaposition from what they were 44 years ago, which is why nobody thought anything was out of the ordinary on November 24, 1971, when a man in Portland, Oregon, bought a seat on Northwest Flight 305 bound for Seattle, Washington. What happened aboard that Boeing 727 jetliner that day was far from ordinary. The legend of D.B. Cooper was born.