Coop is shown
in FWWM to be gifted, at the trailer park feeling drawn to an empty trailer space, that we learn was used by people named Chalfont ( AKA the Tremonds in the tv show ), and we see the mound of dirt where Chet found the owl ring and disappeared.
And in his vision of Laura as a future victim of the killer ( though of course giving a vague description not knowing who she is ) and what she is doing "right now" ( preparing food to be delivered for Meals On Wheels ). Also in the tv show he mentions he stays away from Sarah when she gives a description of Bob ( from which the sketch is made ), because he's "a strong sender."
Fire Walk With Me