The Transportation Security Administration's PreCheck initiative, which is currently available to certain passengers at eight U.S. airports, will be expanded to 27 additional airports over the course of 2012, the TSA announced last week. At the moment, the voluntary program is open to some frequent flyers from Delta Air Lines and American Airlines, as well as certain members of the Customs and Borders Patrol Trusted Traveler programs such as Global Entry, SENTRI and NEXUS. Participants must be U.S. citizens and meet a variety of eligibility requirements. Airports already in the system are Atlanta (Delta only), Dallas (American only), Detroit (Delta only), Las Vegas, Los Angeles (American only), Miami (American only), Minneapolis and Salt Lake City (Delta only). American Airlines will begin offering the service at New York City's JFK International Airport on Feb. 28 and at Chicago's O'Hare International Airport in March; Delta will launch service at Ronald Reagan Washington (D.C.) National Airport in March, as well. Other airports scheduled to begin offering the service this year include Baltimore/Washington, Boston Logan, Charlotte Douglas, Cincinnati/Northern Kentucky, Denver, Fort Lauderdale-Hollywood, Houston's George Bush, Honolulu, Indianapolis, New York City's LaGuardia, Lambert-St. Louis, Louis Armstrong New Orleans, Luis Munoz Marin in Puerto Rico, Newark Liberty, Orlando, Philadelphia, Phoenix Sky Harbor, Pittsburgh, Portland (Ore.), San Francisco, Seattle-Tacoma, Tampa (Fla.), Ted Stevens Anchorage (Alaska) and Washington Dulles (Va.). The TSA plans to expand the program to include additional airlines and airports as it becomes operationally ready to do so. For more information, go here.