What does a human intelligence collector do?

In the United States, becoming a flight attendant typically requires candidates to be U.S. citizens, hold permanent resident status (green card), or possess valid work visas that authorize employment. Airlines are subject to federal regulations and security protocols, which often restrict employment to individuals who have legal authorization to work within the country. While some airlines may consider foreign applicants with appropriate visas, most prefer or require applicants to have legal work authorization to ensure compliance with immigration laws. Therefore, foreigners interested in becoming flight attendants in the U.S. must secure the necessary legal documentation, such as work visas or permanent residency, before they can be considered for employment by U.S.-based airlines.