Observation of an Unusual Upward-Going Cosmic-Ray-like Event in the Third Flight of ANITA - Gorham, PW; Rotter, B; Allison, P; Banerjee, O; Batten, L; Beatty, JJ; Bechtol, K; Belov, K; Besson, DZ; Binns, WR; Bugaev, V; Cao, P; et al. (PHYSICAL REVIEW LETTERS, 2018)