Spherical UFO seen by pilot in New Mexico

Summary

A military pilot observed a spherical object the size of a baseball at arm's length, red and white in color and very bright. The object appeared off his left wing for about five minutes, then climbed at approximately five degrees and disappeared at high speed. According to the report, the object dimmed as it pulled away. Although the pilot clearly saw it, no further investigation was conducted. Possible identifications included balloon, aircraft, or astronomical phenomenon, but no definitive conclusion was reached.