The Pittsburgh Penguins get another key piece back into their lineup. PITTSBURGH – The Penguins continue to step towards a healthier lineup, this time by activating one of the most beloved leaders on the team. After being considered a game-time decision, the Penguins activated Kris Letang from long-term injured reserve. Letang has been out of the lineup for about a month with a lower-body injury and a visit home to be with family following the death of his father. “The body is ready, for sure,” Letang said. “The mind is anxious. You want to get out there and play.” Letang…