CBC News has learned that a Canadian military effort to formally create integrated forces with the United States for expeditionary operations included an even more ambitious option - a plan to fully integrate military forces. The Canadian military efforts were ultimately ... refocused on improving interoperability between the forces. The Canada-U.S. Integrated Forces program was led at the highest levels, with then Chief of the Defence Staff Gen. Tom Lawson and the chairman of the U.S. Joint Chiefs of Staff, Gen. Martin Dempsey (now retired), meeting on several occasions" to hash out a plan that included an option for "fully integrated forces." CBC News reported that the Canadian military had been working on a plan to create a binational integrated military force with the U.S., under which air, sea, land and special operations forces would be jointly deployed under unified command outside Canada. "The government has neither expressed interest in the concept of Canada-U.S. force integration nor directed exploration of it," [defense ministry spokesman Daniel] Proussalidis told CBC News. But the new information from the Defence Department shows the planning ... happened at the highest levels of both forces. A fully integrated force could be politically dangerous.