Shelter Structures America announced the appointment of Keith Krzeminski as Executive Vice President. Krzeminski will be based in Roanoke, Va. allowing Shelter Structures to service the eastern United States and the midwest from a new regional location. Shelter Structures America Inc. is the distributor of Shelter Tent Structures for the US, Canada and Mexico. Shelter manufactures a wide range of clear span tents including A-Frame Structures, Arch/Arcum Structures, Double Decker Structures, Thermo Roof Structures and TFS Structures.