Project 10073 Record Card and Related Correspondence — San Juan, Puerto Rico, June 1954

This document consists of a collection of records, including a Project 10073 Record Card, official military correspondence, and a personal letter from a witness regarding an Unidentified Aerial Phenomena (UAP) sighting in Puerto Rico on June 2, 1954. The primary witness, Harding Franco-Soto, a U.S. Customs Inspector, reported observing a round, red-orange object, estimated to be 100 feet in diameter, while traveling by car near Guayanilla. The witness, accompanied by his family, initially mistook the object for the moon before realizing it was a moving apparatus. He described the object as descending with a fluttering, glider-like motion, swinging from side to side, before making a sharp 90-degree turn and accelerating toward the horizon. The sighting lasted approximately five to seven minutes. The military investigation, conducted by the 72nd Strategic Reconnaissance Wing at Ramey Air Force Base, concluded that the witness was reliable and intelligent. The investigating officer, 1st Lt. Chester D. Harris, explicitly ruled out the possibility of a weather balloon based on the witness's precise description of the object's behavior and physical characteristics. The document also includes the witness's claim of a previous sighting on August 26, 1953, near Cabo Rojo, which he described as being larger and metallic. The witness expressed concern about the lack of military response to these sightings and suggested a 24-hour watch over Puerto Rico. The file includes official transmittal letters from the 72nd Strategic Reconnaissance Wing to various Air Force commands, including the Air Technical Intelligence Center, confirming the submission of the report and the witness's diagrams.