operated by Alaska Airlines, American Airlines, Delta Air
Lines, United Airlines and US Airways, according to the U.S. Transportation
Security Administration. "Eligible" passengers are U.S. citizens who are
members of certain airline loyalty programs or members of a U.S. Customs and
Border Protection Trusted Traveler program, such as
Global Entry. Expedited
screening for international flights will occur at the 40 airports in the
PreCheck program, including domestic flight connections that follow an international
leg.