Dr. Gary Kao, left, answers questions from Sen. Arlen Specter during the Senate Veterans Affairs Committee field hearing concerning botched radiation treatments for prostate cancer at the VA hospital in Philadelphia Monday, June 29, 2009, in Philadelphia. Looking on at right is Dr. Gerald Cross, acting under secretary for health, department of Veterans Affairs. AP Photo logo AP Photo 4 months ago

Dr. Gary Kao, left, answers questions from Sen. Arlen Specter during the Senate Veterans Affairs Committee field hearing concerning botched radiation treatments for prostate cancer at the VA hospital in Philadelphia Monday, June 29, 2009, in Philadelphia. Looking on at right is Dr. Gerald Cross, acting under secretary for health, department of Veterans Affairs.