<p>An Army Ranger who served in Iraq and Afghanistan has died at Fort Benning while training for future deployment, his father says.</p><p>Spc. Brian C. Harrison, 27, of Omak, Wash. died June 29 after returning from a 10-day leave to visit his family, said Dean Harrison, who owns a jewelry store in this north Washington town.</p><p>He said the training exercise was on Army grounds, no one else was killed or injured and others tried in vain to save his son. Use of the exercise has been suspended pending an investigation, he added, declining to say more about what Army officials had told him because of the probe.</p><p>The younger Harrison joined the Army in 2001, participated in the onset of the U.S. invasion into Iraq in March of 2003 and was a fire support specialist and forward observer in Iraq and Afghanistan, his father said.</p><p>At the time of his death he was training for a higher position in the Army's special forces and hoped to become a combat medic, his father said.</p>