Reps. Ralph Regula, R-Ohio, and John Culberson, R-Texas, question a panel of witnesses during a Subcommittee on Transportation, Treasury and Housing and Urban Development, the Judiciary, District of Columbia of the House Appropriations Committee hearing, Wednesday, April 27, 2005, in Washington. Amtrak President and CEO David L. Gunn said Wednesday he believes the makers of the Acela Express trains overestimated the life expectancy of their brake rotors, forcing Amtrak to pull the entire fleet out of service for repairs. (AP Photo/Manuel Balce Ceneta)