Bear River Boys basketball star Justin Beskeen is back for his third stint on the varsity squad, and in his senior season he has his sights set on a league championship and a trip to the section finals. “We definitely want to win league,” he said. “We want to make it to Arco this year.” An All-Pioneer Valley League first-team selection last season, Beskeen leads an experienced and hungry Bruin team into the 2012-13 campaign. “I feel that we are quicker than last year,” he said. “If we are able to use our speed, we might be able to take …