The National Post reports in its Tuesday edition that the U.S. commander of Norad says fifth-generation fighters such as the F-35 are not needed to defend North America, undercutting the central claim by supporters of the aircraft that Canada requires such jets to protect the country. The Post's David Pugliese writes that the Canadian Forces has emphasized that the F-35 is part of its plans to modernize the North American Aerospace Defence Command (Norad). However, U.S. Air Force Gen. Gregory Guillot, who heads the joint U.S.-Canada Norad, told the U.S. Senate Armed Services Committee, "Frankly we don't need fifth [generation] to defend our borders." The Norad commander said fifth-generation jets, considered the most advanced type of aircraft, have a role to play in attacking overseas targets. "Those capabilities are better used overseas where their stealth, air to ground weapons and penetration capability are needed," the general added. He said what his needs for Norad are more fourth-generation fighter jets that have been modernized. Gen. Guillot gave the example of the F-15EX, an aircraft made by Boeing and in service with the U.S. and Israel. Prime Minister Mark Carney has ordered a review of Canada's F-35 purchase.