[unclear] [unclear] 38-19 23 June 1949 Subject: Unidentified Flying Objects - Report of. [unclear] the objects. This position would probably be as much as [unclear] [unclear] of the location given. Source's location when objects left his view [unclear] 42°12'N, 115°40'W. Source flew in a straight line between the [unclear] Position of objects when first observed: 42°30'N, 116°15'W. Position of objects when last seen: 42°22'N, 115°48'W. The objects made a slight change of course from [unclear] to paralleling source's straight line of flight. [unclear] It is believed that conventional aircraft, balloons, astronomical phenomena, and out-of-focus can be eliminated as explanations for the objects sighted by source. Since source was not flying into the sun and since he is an expert pilot-instructor, [unclear] does not appear to be a reasonable explanation; nor do reflections on, or irregularities of, the plexi-glass canopy through which source viewed the objects offer a reasonable explanation, because of the wide range of observance of the objects. As far as the reporting officer's command is concerned (as well as controls en route), the explanation or source's sighting of the strange flying objects remains a question mark.