  We present a first comparison of Energetic Neutral Atom (ENA) heliosheath
measurements, remotely sensed by the Interstellar Boundary Explorer (IBEX)
mission and the Ion and Neutral Camera (INCA) on the Cassini mission, with
modeled ENA inferred from interstellar pickup protons that have been
accelerated at the termination shock, using hybrid simulations. The observed
ENA intensities are an average value over the time period from 2009 to the end
of 2012, along the Voyager 2 trajectory. The hybrid simulations parameters for
the solar wind, interstellar pickup ions (PUIs), and magnetic field upstream of
the termination shock, where Voyager 2 crossed, are based on observations. We
report an energy dependent discrepancy between observed and simulated ENA
fluxes, with the observed ENA fluxes, being consistently higher than the
simulated ones, and discuss possible causes of this discrepancy.
