Lance Corporal Gregory E. Macdonald, 29, Burlington
"Mac" was the old man of his unit, a scholar with a degree in philosophy, graduate training in Near East Studies, and a halting command of Arabic he taught himself. He was killed June 25, 2003, when the lightly armored vehicle in which he was riding rolled over. In a sealed letter he left with his brother, to be opened in the event of his death, he reminded family and friends that ''freedom isn't a moment in life; it is life. The plight of human suffering consumed me ... Understand it ... Then, seek to honor my memory by trying to achieve what I could not."