Citizens not on any terrorist watch list or suspected of a crime are being watched by federal air marshals in a program known as "Quiet Skies," the Boston Globe reports.

Logan Airport in Boston is just one of many airports where air marshals track regular citizens and monitor their behaviors in the airport and on domestic flights, according to the newspaper.

The program called "Quiet Skies" is part of a domestic surveillance program, but it has air marshals tracking regular citizens. These people are not on terrorist watch lists, the Globe reports.

The newspaper reviewed an internal bulletin that says the program's creation was to stop potential threats to commercial flights. Federal authorities, however, appear to have loose guidelines on who can be followed.

The Transportation Security Administration sent a written statement to the Globe about the program. The TSA did not confirm the program existed or if it stopped any threats.