As I mentioned earlier this week, Carter and Ollie didn't exactly have a friendly reunion in St. Roch at the start of Volume 4. Here, Hawkman works the backhand.
(Click to Hawk-size!)
Later, after the case is solved, they bid their goodbyes in typical mega-macho fashion.
Images: Hawkman v.4:no.5-6, 2002, Rags Morales.