Air Force Rank: Regulation size: nickel plated metal finish: Officer: Lieutenant Colonel O-5

USAF Lieutenant Colonel Rank 1 Pair. Lieutenant Colonel, abbreviated Lt Col, is the second Field Officer rank in the Air Force, ranking above Major and below Colonel. Lieutenant Colonels command a squadron in the mission support group, maintenance group, or in a medical group, or directing operations in the operations group. Approximately 1-1/8”H  x 1”W.