Some humans have fought hand-to-hand with a Klingon. Captain Chris Pike in an issue of the comic series Star Trek: Early Voyages. Captain James Kirk has as well in some of the original series and Star Trek: The Search for Spock. Also Commander Will Riker, of the USS Enterprise fought the klingon first officer aboard the IKS Pagh, whilst participating in an exchange program, to prove loyalty to the ship's Captain (The Next Generation: A Matter of Honor). In "The Way of the Warrior," Deep Space Nine's entire ops crew fought hand to hand with Klingons.