The solution to the origin of the UHECRs, like the solution
to the origin of the galactic cosmic rays, depends on direct
cosmic ray observations in addition to multiwavelength
and UHE neutrino detections of cosmic-ray sources. The
advent of Auger, IceCube, GLAST, and ground-based
gamma-ray telescopes promises multi-channel data that
should solve this problem. In this talk, I review favor
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