Canada's space industry is modest, but its capabilities are world class. The renowned Canadarm was first deployed in 1981 during the second mission of the space shuttle Columbia. The arm subsequently flew on every NASA space shuttle mission and was instrumental in repair missions to the Hubble Space Telescope, and construction of the International Space Station. The U.S. is by far the primary destination for Canadian-made aerospace products, responsible for $7.7B of the $12.3B Canadian industry.