Side-to-Side Oscillation
Date	Location	Description
3-29.50	Ironwood, Mich	Round UFO moving with "slipping and sliding sideways" motion. [Section V]
10-9-50	Near Williamstown, Virginia	Twp cylindrical UFOs swinging back and forth like "flying pendulums."
3-10-52	Oakland, California	Two dark hemispherical UFOs, one following straight-line course, second swaying back and forth "like a pendulum" across the path of the first. [Section VI]
10-54	Pohang, Korea	Formation of 7 discs; individually "fluttered," swaying from side to side.
9-22-56	Williston Plains, North Dakota	UFO (appearing alternately circular and delta-shaped) moved slowly past, oscillating from side to side.
10-30-61	Derry, Penna.	Four luminous blue discs "oscillated" from side to side on constant course. [Section I]
6-19-52	London, England	Disc "oscillated" from side to side, "hesitating sometimes and practically stopping in midair," on constant course.