On 25 January 2008, Boeing and Lockheed Martin announced an agreement to embark on a joint effort to develop a new US Air Force strategic bomber, with plans for it to be in service by 2018. This collaborative effort for a long-range strike program will include work in advanced sensors and future electronic warfare solutions, including advancements in network-enabled battle management, command and control, and virtual warfare simulation and experimentation. Under their joint arrangement, Boeing, the No. 2 Pentagon supplier, would be the primary contractor with about a 60% share, and Lockheed Martin, the world's largest defense contractor, would have around a 40% share, according to sources familiar with the companies' plans. Northrop Grumman, another major defense contractor, received $2 billion in funding in 2008 for "restricted programs" – also called black programs – for a demonstrator that could fly in 2010.