Incident #179 Sighting Report — San Francisco, California, October 1947

This document contains a collection of materials related to Incident #179, a reported sighting of a 'mysterious light' in San Francisco, California, in October 1947. The primary source of the report was an aviation student. The official evaluation of the incident, recorded in the Project Grudge report, dismisses the account as a 'crack-pot report' with insufficient information to evaluate. A handwritten note on the original incident form suggests the phenomenon might have been related to static electricity. The document also includes a letter dated May 11, 1949, from the Air Weather Service at Andrews Air Force Base to the Commanding General of the Air Materiel Command at Wright-Patterson Air Force Base. This letter confirms that incident summaries 173 through 233 were checked against routine weather-balloon ascents made by the Air Force, Navy, and Weather Bureau. Furthermore, the document includes an 'Incident Index' containing Dr. Hynek's evaluations extracted from the Project Grudge report, which categorizes various incidents by probability and explanation, such as astronomical, balloons, or lack of evidence.