Associated Press KUWAIT CITY – A military tribunal began hearings today for a U.S. Army sergeant charged with killing two superior officers in Iraq, with a witness testifying that the defendant told him he wanted to kill one of the victims. Staff Sgt. Alberto B. Martinez, of Troy, N.Y., faces murder charges in the June 7 killings of Capt. Philip Esposito and Lt. Louis E. Allen in a bomb blast at Forward Operating Base Danger, near the central Iraqi city of Tikrit, the hometown of the deposed Iraqi leader, Saddam Hussein, some 80 miles north of Baghdad. It is believed...