"It's just a really precarious time of year for airline employees," Anthony Cataldo, a flight attendant for American Airlines with 33 years' experience, told Insider. Such predictions have left some airline workers anxious about carrying the industry through what could be a record-breaking travel season, four mainline pilots and flight attendants told Insider. Compared to last summer, airline staffing levels have largely improved, with Delta and United hiring thousands of new employees this year. The Southwest and American Airlines pilot unions both voted to authorize a strike this month. Air traffic control remains understaffedAs of April, the crowded airspace around New York City had 129 certified air traffic controllers — just over half of the staffing target of 226 — with 67 air traffic controllers in training, according to aviation firm Rinaldi Consultants.

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