We summarize the history of the Flys Eye detector project and discuss results on the UHE cosmic ray spectrum and composition produced by this experiment. The design and present status of the High Resolution Fly’s Eye is discussed. Results on the UHE composition from the HiRes prototype/CASA/MIA detector are presented. Plans for a new collaboration with the Telescope Array group to build the Snake detector are discussed. ©1998 American Institute of Physics.