http://tags.library.upenn.edu/tag/transportation+airlines PennTags Feed http://tags.library.upenn.edu/makerecord/url/2760 http://tags.library.upenn.edu/makerecord/url/2760 &quot;This November 2005 report looks at changes in airline travel since the Sept. 11, 2001, terrorist attacks. Features data on number of domestic airline passengers, available seats, prices, and number of airline employees. Includes brief discussion of decreasing airfares in reaction to the growth of low-cost carriers. From the Bureau of Transportation Statistics (BTS), U.S. Department of Transportation.&quot; (via LII)<br />