Allegheny County executive Dan Onorato and Mayor Luke Ravenstahl said Friday that land for a potential a new arena for the Pittsburgh Penguins has been secured. At a press conference Friday, they also asked the hockey team to commit to staying in Pittsburgh. The Penguins, which are for sale, say the team could move if an arena isn't built to replace the 45-year-old Mellon Arena, the oldest and smallest in the National Hockey League. Several bidders are interested in the team, and some have said they would pay for or help fund a new arena. But not all bidders have committed to keeping the team in the city.