UFO SYMBOLS: Secret Flights or Secret Tests?

 1975?: UFO Symbols - Think Aboutit - UFOs

Lucius Farish (a true UFO investigator) along with Dale M. Titler wrote about symbols for Official UFO magazine (the mid-70s) that included these representations:

Certain UFO witnessed have been prototypes, one obviously so due to its "friendly" markings on the undersides of the wings as it moved slowly over the heads to two scientists. It appears that prototype aircraft have felt themselves free of identification markers, required safety lighting, and other restrictions for many years. If a aircraft was developed in another country by that government or another the same situation might arise. For the suspicious who might recall the mind tests conducted by the CIA in the 1950's and 1960's, there may also be the thought of how these flights might provide ideal testing situations for using the concept of the "UFO" to achieve some clandestine goal. 

The top one was a 1959 sighting of words on a UFO in Salvador City, Brazel, Helio Agula.

The second one was a UFO seen by a Morris Heflin, Oklahoma City, Ok, April or May of 1971. "IX1478"

The bottom is March 1966, and the location is incorrect (probably based on the incorrect information in Hynek's UFP Experiences book and cited elsewhere repeating the mistake). The location was Temple, Oklahoma just north of the Red River. The witness was Eddie Laxon, who was a civilian employee at Shepherd Field, Wichita Falls, Texas.