– FoxtrotAlpha – Foreign Object Debris (or FOD) is a huge problem on aircraft carriers. A metallic button from a shirt or a single nut could destroy a million dollar engine and endanger the lives of an aircrew. America’s solution? FOD walks and sweeper carts. Russia’s solution? Taking an old MiG-15’s jet engine, slapping on a planar diffuser, and strapping it to a tractor.