Senior Airman Matthew Baldyga prepares to climb the radio frequency tower at Joint Base Charleston - Weapons Station June 14. Airman Baldyga is a radio frequency transmissions systems journeyman with the 628th Communications Squadron. (U.S. Air Force photo/Staff Sgt. Katie Gieratz)

Senior Airman Matthew Baldyga and Staff Sgt. John Kinglsey climb the radio frequency tower during a training exercise at Joint Base Charleston - Weapons Station June 14. Sergeant Kingsley is a radio frequency transmissions craftsman and Airman Baldyga is a radio frequency transmissions journeyman assigned to the 628th Communications Squadron. (U.S. Air Force photo/Staff Sgt. Katie Gieratz)

Staff Sgt. John Kingsley assists Tech. Sgt. Nathan Swab with a safety harness in preparation for a training climb of a radio frequency tower at Joint Base Charleston - Weapons Station June 14. Sergeant Kinglsey and Sergeant Swab are radio frequency transmissions craftsmen with the 628th Communications Squadron. (U.S. Air Force photo/Staff Sgt. Katie Gieratz)

A sign warns visitors of danger while Airmen from the 628th Communications Squadron climb a radio frequency tower at Joint Base Charleston - Weapons Station, June 14. (U.S. Air Force photo/Staff Sergeant Katie Gieratz)

Tech. Sgt. Nathan Swab inspects a frequency tuner for corrosion at Joint Base Charleston - Weapons Station June 14. Sergeant Swab is a radio frequency transmissions craftsman with the 628th Communications Squadron. (U.S. Air Force photo/Staff Sgt.Katie Gieratz)