According to the FAA, all prospective air traffic controllers "must have the capacity to perform the essential functions of these positions without risk to themselves or others. Candidates must be physically and mentally fit and meet standards for vision, hearing, cardiovascular, neurological and psychiatric health."

FAA officials confirmed that radar guiding Newark flights went dark again early Friday morning, raising fresh concerns over air traffic safety. Planes at New Jersey’s Newark Liberty International Airport were briefly left flying blind overnight as the airport experienced another radar outage—the second incident in less than two weeks.

White House Press Secretary Karoline Leavitt said Friday that the “glitch this morning at Newark” was caused by the same issues as last week.