Former Vice President Dick Cheney suffered a mild heart attack Monday
after he complained of experiencing chest pains. Cheney was taken to
George Washington
University Hospital in Washington, D.C. for observation.

Cheney has a long history of history of heart problems, including his first heart attack at age 37. Among other procedures, he has undergone a quadruple bypass surgery, two artery-clearing angioplasties, and has had his pacemaker -- which was first implanted in 2001 -- replaced in 2007.

Cheney, vice president under former President George W. Bush, and Secretary of Defense under President George H.W. Bush, recently announced his support of the effort to repeal "don't ask, don't tell."

"Twenty years ago the military were the strong advocates of 'don't ask, don't tell' when I was secretary of defense," Cheney said on ABC News' This Week. "I think things have changed significantly since then. I see that Don Mullen, or Mike Mullen, the chairman of the Joint Chiefs of Staff, has indicated his belief that we ought to support a change in the policy. So, uh, I think my guess is the policy will be changed.”