  These proceedings address a recent publication by the ANITA collaboration of
four upward- pointing cosmic-ray-like events observed in the first flight of
ANITA. Three of these events were consistent with stratospheric cosmic-ray air
showers where the axis of propagation does not inter- sect the surface of the
Earth. The fourth event was consistent with a primary particle that emerges
from the surface of the ice suggesting a possible {\tau}-lepton decay as the
origin of this event. These proceedings follow-up on the modeling and testing
of the hypothesis that this event was of {\tau} neutrino origin.

High Energy Astrophysical Phenomena