ACTUATOR CLAMPS Air Force Airman 1st Class Jessica Guinn tightens clamps around an actuator on an F-16 Fighting Falcon on Joint Base Balad, Iraq, Oct. 6, 2008. Guinn is an aerospace propulsion apprentice is assigned to the 332nd Expeditionary Aircraft Maintenance Squadron. Tightening the clamps secures protective layers known as booties around the actuator, preventing dust and debris from damaging it. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 369867-K-XQH54-734.jpg Photo Gallery