An Excelsior-class Federation starship that served in Admiral Nechayev's task force against the rogue Borg and later carried Admiral Pressman to his meeting with the Enterprise-D.
The USS Crazy Horse was an Excelsior-class starship named after the Oglala Lakota leader. It is mentioned in two episodes of The Next Generation.
In Descent, it is one of the ships assigned to the task force Vice Admiral Nechayev forms after Borg ships begin raiding Federation outposts, alongside the Gorkon and the Agamemnon.
In The Pegasus, the Crazy Horse brings Admiral Erik Pressman to a rendezvous with the Enterprise-D at the start of his secret mission to recover the lost USS Pegasus and its illegal phasing cloak.