Unidentified white oval object sighted with theodolite in Yuma

Summary

On February 4, 1953, a meteorologist at Yuma, Arizona, recorded an unusual aerial phenomenon. While tracking a weather balloon with a theodolite, he observed two white, opaque, and slightly oval objects moving at high speed. The witness, experienced in balloon tracking, stated they were neither balloons nor conventional aircraft. The objects appeared suddenly, performed complex maneuvers, and disappeared behind cirrus clouds. There was no noise or visible reflections, adding mystery to the case. The official conclusion was "unidentified".