Before the September 11, 2001 attacks, the Federal Air Marshal Service consisted of varying numbers of FAMs dependent on government funding. Although 50 positions were authorized by Congress, only 33 FAMs were active on 09/11/01. As a result of the 9/11 attacks, President George W. Bush ordered the rapid expansion of the Federal Air Marshal Service. Many new hires were agents from other federal agencies, such as the United States Border Patrol, the Federal Bureau of Prisons, (BOP), the DEA, NPS, FBI, ATF, INS, U.S. Housing and Urban Development Office of the Inspector General (OIG), U.S. Postal Inspection Service (USPIS), IRS CID, and many others. Immediately after the attacks on 9/11, then-Director McLaughlin was tasked with hiring and training 600 air marshals in one month, an impressive feat that has not been repeated by any government agency. A classified number of applicants were later hired, trained, and deployed on flights worldwide. As of August 2013, this number is estimated to be approximately 4,000. Currently, these FAMs serve as the primary law enforcement entity within the Transportation Security Administration (TSA).