My thoughts: BG presented himself as a figure of some authority to immediately gain the upper hand in the conversation, possibly under the ruse of getting them to safety away from the bridge, as its condition was poor. Libby and Abby may have been vaguely familiar with BG but not connected deeply or personally. BG approached them deliberately and with considerable focus and effort to close the distance between them while on the bridge. The two sketches are of the same individual. This individual may look considerably different with and without a beard. BG is local to Delphi, knows the area well, and intended to target the girls, or at least one of them, specifically. BG is involved or familiar with the case and the families, either as a support figure or an investigative/reporting figure. BG has not left the area.