After World War II, West Germany's Bundesgrenzschutz border guards and some West German police units kept the "Stahlhelm" in their inventories (police units can be seen wearing them during footage of the Black September hostage crisis in 1972), and the Fallschirmjäger variant was used for some time by the GSG 9. With the re-armament of West Germany the Bundeswehr introduced the United States Army M1 Helmet which was replaced by a Kevlar helmet ("Gefechtshelm"), similar to the modern US helmets, in the 1990s. German firefighter units today still use "Stahlhelm"-shaped helmets in a fluorescent color.