Chief of Naval Operations Adm. Gary Roughead has signed off on the Navy’s “Vision for Confronting Irregular Challenges.” The Navy will buy ships and aircraft that provide “broadened” and “balanced” capabilities to deal with a range of irregular opponents, including pirates, terrorists, criminal organizations, insurgents and other state and non-state actors, the document says. By “balancing shifts in our investments” the service will better address and incorporate “urgent and emerging requirements” to confront the “hybrid nature” of future challenges. It emphasizes buying " ships and aircraft,” oriented to “lower end operations,” such as Littoral Combat Ship mission modules, Riverine squadrons...