A senior U.S. Army soldier was killed along with a couple of majors by a suicide bomber in Afghanistan, and three special forces soldiers were gunned down by an Afghan commander who had won their trust and invited them to dinner. The suicide bomber struck Wednesday as a group of U.S. military and civilian officials from the 4th brigade, 4th Infantry Division were in Sarkowi in Kunar Province, which is located in eastern Afghanistan. The suicide attacker detonated an explosive vest near the group. Killed in the attack were Command Sgt. Maj. Kevin J. Griffin, 45, of Laramie, Wyo., the...