332nd EAMXS TSgt. Chris Lakkala, deployed from Aviano AB, regulates the rate of operation for the 'replenisher' tray on the right as it feeds PGU-28A/B 20mm cannon rounds into the Universal Ammunition Loading System (UALS). TSgt. J.C. Whitney, also from Aviano, prepares more rounds to load through the replenisher. [USAF photo by Capt. Ken Hall]
See also: F-16s use new 20mm ammo in battle
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