An Idaho witness at Post Falls reported watching a rectangle-shaped object “falling from the sky” shortly after hearing the sound of a sonic boom, according to testimony from Case 79772 from the Mutual UFO Network (MUFON) witness reporting database.

The witness stepped outside after hearing a sonic boom about 11:45 a.m. on October 12, 2016.
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“Looking south I observed what appeared to be some type of large rectangular object tumbling end over end emitting a large amount of smoke (white, gray and yellowish in color) trail as it fell,” the witness stated. “It was about four to five times the width of a typical airliner contrail and it was going straight down toward the ground.”