A proposed restructure of the Army's aviation fleets, shaped to deal with a dismal fiscal outlook and inevitable force reductions, includes the divestiture of the entire OH-58 Kiowa Warrior fleet and a plan to use AH-64 Apache helicopters -- mostly taken from the National Guard -- to meet its armed aerial scout mission, according to Army officials. The service convened a working group two months ago to come up with a better plan to deal with impending budget cuts and...