Justin Jones is embracing the challenge of being the Bears’ 3-tech

When Justin Jones arrived on the first day of voluntary OTAs at Halas Hall, the feeling could be compared to the first day of school. Everything was completely new for the 25-year-old free-agent acquisition. Long gone are the days with the Los Angeles sun and the Chargers’ powder blues. In is “Bear weather” and the team’s iconic uniforms. One thing…