A search for arrival direction clustering in the HiRes-I monocular data above 10^1^9^.^5 eV High Resolution Fly's Eye Collaboration, R.U. Abbasi, T. Abu-Zayyad, J.F. Amann, G. Archbold, R. Atkins, J.A. Bellido, K. Belov, J.W. Belz, S. BenZvi, D.R. Bergman,