Two weapons specialists at Luke Air Force Base have created a simple 3D-printed attachment that prevents spent ammunition casings from scattering beneath F-35A Lightning II jets, reducing the risk of costly foreign object debris damage to the aircraft’s engines. The attachment costs less than $100 to produce, and it could solve a persistent problem faced by the US Air Force during gun system downloads, a report from ABC15 Arizona reveals. Tech. Sgt. Zach Allbee and Tech. Sgt.