Sgt. David D. Hack is a highly decorated Vietnam War veteran, former U.S. Army Ranger instructor, and the longtime CEO of U.S. Wings, a major supplier of military and aviation apparel.   Humble Beginnings SFC David D Hack was raised in rural Sunfish, Kentucky. Later, he moved to Louisville, Kentucky. David Hack joined the … Continue reading SFC David D Hack, U.S. Army, (Ret) Biography