At the end of the article it talks about other airlines:

"Given there is an FDA-approved vaccine, pandemic leave will only be offered to team members who are fully vaccinated and who provide their vaccination card to us," American Airlines said to its staff, warning that it may mandate vaccines for its employees in the future if the virus continues to mutate.

This faux-vaccine, which does not grant immunity, will be mandated to fight the exact variants that the vaccine basically has little to no protection against. Science!

At the end of the article it talks about other airlines:

Though it did not mandate vaccines for its employees, American Airlines last week took a harder stance on workers who contract COVID-19 and become ill, ending its special pandemic leave and requiring employees to use their own sick days.

This faux-vaccine, which does not grant immunity, will be mandated to fight the exact variants that the vaccine basically has little to no protection against. Science!