Lockheed U-2 / TR-1Lockheed U 2 airplane model. The U 2 provides continuous day or night, high altitude, all weather, stand off surveillance of an area in direct support of U. S. and allied ground and air forces. It provides critical intelligence to decision makers through all phases of conflict, including peacetime indications and warnings, crises, low intensity conflict and large scale hostilities. When requested, the U 2 also has provided photographs to the Federal