WASHINGTON - OCTOBER 27:  Sen. John McCain (R-AZ) hold a news conference to announce the introduction of "The Post-9/11 Troops to Teachers Enhancement Act" at the U.S. Capitol October 27, 2009 in Washington, DC. The bill will expand the Troops to Teachers program by reducing length of military service requirements for participants, expanding the number of school districts at which troops may receive a stipend to teach and other changes.  (Photo by Chip Somodevilla/Getty Images)
    WASHINGTON - OCTOBER 27:  Sen. John McCain (R-AZ) hold a news conference to announce the introduction of "The Post-9/11 Troops to Teachers Enhancement Act" at the U.S. Capitol October 27, 2009 in Washington, DC. The bill will expand the Troops to Teachers program by reducing length of military service requirements for participants, expanding the number of school districts at which troops may receive a stipend to teach and other changes.  (Photo by Chip Somodevilla/Getty Images)

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      WASHINGTON - OCTOBER 27: Sen. John McCain (R-AZ) hold a news conference to announce the introduction of "The Post-9/11 Troops to Teachers Enhancement Act" at the U.S. Capitol October 27, 2009 in Washington, DC. The bill will expand the Troops to Teachers program by reducing length of military service requirements for participants, expanding the number of school districts at which troops may receive a stipend to teach and other changes. (Photo by Chip Somodevilla/Getty Images)

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