(Editor's Note: This story has been updated to reflect the number of JLTV A2s the Army ordered from AM General in January.) NASHVILLE, TN -- The Army's latest order of the A2 variant of Joint Light Tactical Vehicles will be its last, a senior leader told reporters Wednesday. The service bought about 250 JLTV A2s from AM General in January after the company spent the past two years standing up a new production line in a $8.66 billion follow-on...