Lastly, let’s mention that there is a famous photograph of these “birds” taken by Wagih Risk (shown below). However, the photograph was analyzed in detail by Vern Miller of the Brooks Institute of Photography of Santa Barbara, California in the 1990s, and it became clear that although it was a genuine picture of the phenomenon, the individual object’s shape is likely to have been altered to look like “birds” .
“a brilliant flash of light occurred, centered on an area where Arnold saw nine bright lights. These traveled in an undulating fashion between (in all) three peaks of the Cascade mountains, hugging the terrain, frequently giving off brilliant blue-white flashes, usually preceding a change of motion. As Arnold obtained a closer view of them, the lights showed themselves to be generally discoid in shape, though with variations which may have been due to shape-changing characteristics, or difficulty of definition at long distances on Arnold’s part. The light varied in intensity, and maintained a rough formation. […] The location where the incident took place also speaks volumes. The Cascades Mountains are located directly on a tectonic plate margin.”