Editing Composite armour (section)

==Improvised==
In 2004, American [[Marvin Heemeyer]] used an ''ad hoc'' composite armour on his [[Komatsu Limited|Komatsu D355A]] [[bulldozer]] ("which he called the MK Tank and in popular culture, the Killdozer") used in a rampage in response to a dispute with the city he lived in over a zoning issue. The armour, at some places a {{convert|1|ft|cm|sigfig=2}} thick, consisted of a layer of [[concrete]] sandwiched between layers of [[steel]], successfully rendering the vehicle impervious to [[small arms]] fire and small explosives used by law enforcement in an attempt to stop the vehicle.