American Airlines is the latest US airline to update its booking process for non-binary people to sign the appropriate gender markers when they file the special form to book tickets. People who have a non-binary gender marker on their ID documents can now mark their gender as “U’ or “X” when flying with American Airlines. The option will be rolled out on American Airlines’ website soon, and for now non-binary passengers can call up to change the designated gender marker on booking forms filed before the new policy was enacted. The suggested standard options is to add “unspecified” or “undisclosed” gender categories, in addition to the preexisting “male” or “female” options. The X gender marker was added back in March 2019. The moves comes after two big trade groups, Airlines for America (A4A) in the US and the International Air Transport Association (IATA) approved a new international best-practices standard at the beginning of 2019, suggesting that if there are ID s stating people’s gender as neither male nor female, then it should be reflected in the booking forms as well.