Summary: U.S. Army Sgt. John M. Russell shot and killed five fellow soldiers at a counseling center at Camp Liberty in Iraq. Killed were Cmdr. Charles Keith Springle, 52, a Navy commander and psychologist from Beaufort, N.C.; Maj. Matthew Houseal, 54, an Army reservist and psychiatrist from Amarillo, Texas; Army Sgt. Christian E. Bueno-Galdos, 25, of Paterson, N.J.; Spc. Jacob D. Barton, 20, of Lenox, Mo.; and Pfc. Michael E. Yates Jr., 19, of Federalsburg, Md.