ABC News’ Pierre Thomas and contributor Richard Frankel report on the investigation into the background of alleged gunman Elias Rodriguez.

U.S. Secretary of the Navy John Phelan joins 'Squawk Box' to discuss how he plans to apply his business background to the Navy, the importance of shipbuilding and aircraft carriers, future of warfare, ...

There's no doubt the idea of spending a white Christmas in the northern hemisphere is something that has intrigued most ...