 Complete the following phrase:  Summer 1990 saw the peak of Air Force activity at the Tonopah Test Range Airport. After the Iraqi invasion of Kuwait the base was mobilized to support Desert Shield. On August 19, 1990, 22 F-117As from the 415th and a dozen tankers left Tonopah for Langley AFB. A total of 18 F-117s would continue onward to Khamis Mushait Air Base in Saudi Arabia for 