High school, SportsHeat acclimation week means the high school football season is officially underway. The five-day period leads up to the beginning of mandatory training camps next week. At left, Serra Catholic players run sprints up the hill on the school’s campus in McKeesport. At right, Belle Vernon head coach Scott Bryer watches over workouts on “The Beach” at James Weir Stadium. Mike Darnay / MVI Sports...