NEW YORK (CBSNewYork/AP) – Two workers were hospitalized after opening a package at John F. Kennedy International Airport Sunday, but the substance inside – initially feared to be nerve gas – turned out only to be beauty supplies.

As CBS 2’s Steve Langford reported, it was a tense scene at the U.S. Postal Service facility at the eastern edge of the airport Sunday. Port Authority police, the FDNY, and an FBI hazardous response team all rushed to the scene after the workers reported feeling ill.

In this post-9/11 world, authorities respond quickly and forcefully out of an abundance of caution, especially at an installation like JFK.

Meanwhile, as 1010 WINS’ Gary Baumgarten reported, the mail processing center workers who opened the package were taken to Franklin General Hospital in Valley Stream shortly after 3 p.m., according to FDNY Emergency Medical Services. Both were in good condition.