The energy range covered by the Telescope Array
experiment, from 2x10¹⁵ eV to 2x10²⁰ eV, contains the
end of the galactic cosmic ray spectrum, the
galactic-extragalactic transition, important information
about the nature of cosmic rays throughout this energy
region, and what probably are the highest energy
particles in the universe. As time permits, I will discuss
measurements of the spectrum and composition of
cosmic rays, and searches for anisotropy (and hence the
sources of these particles).