GREEN BAY – Sam Siefkes is a Wisconsin native and the Green Bay Packers’ new linebackers coach. That’s pretty cool, but not remotely as cool as the story that helped pave the way. Siefkes was born in Oconomowoc and played football at Division III UW-La Crosse in 2011. He got his start in coaching as a student-assistant at La Crosse after injuries ended his playing career. “I had just gotten done doing an internship at Florida International (in 2014), and then I went back to my school at UW-La Crosse to finish up what would have been my senior year,” Siefkes said at Lambeau Field on Tuesday. “I had student coached there for, that was my upcoming third year. So, I had already been coaching for three years by the time I was 21 years old.” Siefkes enrolled at the University of Wisconsin in 2015 with an eye toward a career as a physical-education teacher. “Teaching is kind of my passion. That’s why I got into coaching,” he said. “And I was like, ‘You know what?…