The President of the United States of America, authorized by Act of Congress, July 2, 1926, takes pleasure in presenting the Distinguished Flying Cross to Major Clarence D. Hartley, United States Air Force, for extraordinary achievement while participating in aerial flight as a Navigator for the 41st Tactical Electronic Warfare Squadron, Takhli Royal Thai Air Force Base, Thailand, from 29 July 1968 to 14 July 1969. During this period, Major Hartley flew extremely hazardous missions through adverse weather conditions and through the constant threat of hostile ground fire and attack. In spite of this he superbly accomplished these highly intricate and hazardous missions in support of free world forces combating aggression. Through his personal bravery and energetic application of his knowledge and skill, he significantly furthered the goal of the United States in Southeast Asia. The professional competence, aerial skill, and devotion to duty displayed by Major Hartley reflect great credit upon himself and the United States Air Force.