GEN Larry D. Welch, left, CHIEF of STAFF, U.S. Air Force, presents a retirement certificate to Rosalie Cassidy and her husband, GEN Duane H. Cassidy. GEN Cassidy is retiring after 36 years of service and has been relieved by GEN Hansford T. Johnson, seated at left, as Commander in CHIEF, Military Airlift Command/U.S. Transportation Command