a technician was working on an F-16 when he accidentally activated the six-barrels 20mm Vulcan M61A-1 cannon of that F-16. The cannon was loaded and some bullets hit another F-16AM (FA-128). That aircraft had just been refuelled and was – together with another F-16 – being prepared for a (training) mission. Due to the bullets, the F-16AM exploded and damaged the other F-16.