Six Airmen and the Blue-white Circle over San Marcos AFB

First Lieutenant Wayne D. Scott was the base officer of the day, driving on San Marcos Air Force Base at about 22:40 on 21 July 1952. He saw a light climb steeply and level off "like an aircraft under good control". Staff Sergeant Samuel R. Locke was off the base on the road from Lockhart, near Maxwell, Texas. He saw a red flash and a descending blue flame like a flare, then a round white-to-yellow object moving off south. Air policemen on the base saw a blue-green light rise and fall, or drop like a shooting star. At about 22:45 the fence guard on his rounds, Airman Third Class Paul M. Nelson Jr., watched a slow reddish-yellow object pass over the base about four times.

What is on the record

Blue Book case 1516 holds the base's Air Intelligence Information Report and the witness statements. The report's summary describes one perfectly circular object giving off brilliant blue-white light with a trailing blue light. It made no sound and was seen for about sixty seconds, at speeds reported anywhere from a hover to near-sonic. It vanished "as though the flame or light were extinguished". The other named observers are Staff Sergeant Thedford R. Townsend and two Air Police airmen, David McKenzie and Frank R. Norred.

The report is candid about its own material. It notes that the observers were not rated and that their statements conflicted. It also says that no meteorological or other activity could account for what they saw. Read one by one, the statements describe different-looking things: a meteor-like blue-green fall in one and a slow repeated pass in another. The single circle is the base's synthesis. Blue Book placed the case on its official Unidentified list. NICAP, the Berliner list of Blue Book Unknowns, the Hatch database and the Overmeire catalogue all carry it.

Why it sits where it does

L4 · OFFICIAL RECORD: a released government record names who saw it. All six identified witnesses are servicemen named in the Air Force's own report, and their statements are the only account the archive holds. A high tier speaks to the paperwork and says nothing of what was in the sky. Whether the six men saw one thing or several is not resolved here.