UFO. Canada

 One ball, about 5 feet across, was observed by five male experienced witnesses two of them independent on a farm for one hour. Policemen, newspapermen, and an astronomer observe a three-foot diameter, maneuvering mass. We followed country roads until we came within 100 yards of the object. It was hovering around a large tree, which stood alone in the center of a cultivated field. The tree was about 100 yards distant and about 120 feet high. The object, which subtended an angle of about 1/4 degrees (giving it a physical diameter of less than 3 feet), appeared circular in shape and was thus probably a spheroid. It was highly luminous against the dark sky background and changed color through the whole visible spectral range with a period of ~ 2 seconds (rather an irregular period). Because it was rather bright, I may have slightly overestimated the angular size, and 1/4 degrees should perhaps be considered an upper limit. A lower limit would certainly be 1/8 degrees. The object appeared to be examining the tree rather closely. It circled the upper branches, ranging from 50 to 100 feet off the ground, passing in front of the tree, then clearly visible through the branches on passing behind the tree again. It continued this apparent “observation” of the tree for several minutes while we watched. Then, anxious for a picture, we climbed the perimeter fence and started slowly toward the tree facing due west. We had not gone more than 10 feet before it “noticed” us and, noiselessly accelerating at a very high rate, headed almost directly south, disappearing over the horizon (on a slightly rising trajectory) in about 2-1/2 seconds. (I consider my length and time estimates to be quite reliable as I was actively engaged in track and field at the time and thus quite competent at this type of estimation. Even under such exceptional circumstances, these figures are most probably within +/- 20 percent.)