Complex sentence: One of the three is described as standing in the Badge Man's position, behind the picket fence on the grassy knoll: the program identifies him as Lucien Sarti, a French national and alleged contract killer.
Split into simpler sentences: One of the three is described as standing in the Badge Man's position, behind the picket fence on the grassy knoll. The narration identifies this shooter as Lucien Sarti, a French national and alleged contract killer.