Senate Armed Services Committee members, from left, Sen. John McCain, R-Ariz., the committee's ranking Republican, Sen. Lindsey Graham, R-S.C., and Sen. Joseph Lieberman, I-Conn., take part in a news conference on Capitol Hill in Washington, Wednesday, June 23, 2010, to talk about confirmation hearings for Gen. David Petraeus. (AP Photo/Alex Brandon)

Photo by: Alex Brandon

Senate Armed Services Committee members, from left, Sen. John McCain, R-Ariz., the committee's ranking Republican, Sen. Lindsey Graham, R-S.C., and Sen. Joseph Lieberman, I-Conn., take part in a news conference on Capitol Hill in Washington, Wednesday, June 23, 2010, to talk about confirmation hearings for Gen. David Petraeus. (AP Photo/Alex Brandon)