At No Magic World Symposium 2015 (NMWS2015) I presented the story about adopting MBSE using SysML in the development of Joint Strike Missile (http://www.kongsberg.com/en/kds/products/missilesystems/jointstrikemissile) at Kongsberg Defence and Aerospace. The presentation contains a hands-on description on how to organize a System Architecture Model as well as lessons learned in this adoption process.