"A front-page report in today’s New York Times based on documents leaked by NSA whistleblower Edward Snowden confirms that the NSA, like the DHS, uses airline reservation data as part of its profiling and social
“A front-page report in today’s New York Times based on documents leaked by NSA whistleblower Edward Snowden confirms that the NSA, like the DHS, uses airline reservation data as part of its profiling and social network analysis of US citizens and foreigners.”
See the full text: How the NSA obtains and uses airline reservations (The Identity project, link)
and see: How airline reservations are used to target illegal searches (link)