Jeff O'Haco played in The Abduction as a different character: One Eye.
Sully was able to successfully donate blood to both Loren (earlier in the series) and Cloud Dancing. Either all three men have the same blood type, or Sully is type O negative.
Near the 18 min mark, several Sundance scars are visible on Cloud Dancing's chest. Larry Sellars turned down a role in the film Dances With Wolves because no agreement could be reached that allowed him 4 days off to attend Sundance ceremony in South Dakota.
First appearance of Patrick Kilpatrick as Sergeant O'Connor.