TSA began making passengers remove their shoes to screen for explosives in August 2006. The policy was implemented nearly five years after the 9/11 attacks and when Richard Reid, who is known as the “shoe bomber,” used matches in an attempt to ignite explosive devices hidden in his shoes on a flight from Paris to Miami.

For the first time in almost 20 years, travelers may no longer be required to take off their shoes during security screenings at certain U.S. airports.

Security screening sans shoes became a requirement in 2006, several years after “shoe bomber” Richard Reid’s failed attempt to take down a flight from Paris to Miami in late 2001.