  We present the preliminary results of an analysis of the sub-populations
within the near-Earth asteroids, including the Atens, Apollos, Amors, and those
that are considered potentially hazardous using data from the Wide-field
Infrared Survey Explorer (WISE). In order to extrapolate the sample of objects
detected by WISE to the greater population, we determined the survey biases for
asteroids detected by the project's automated moving object processing system
(known as NEOWISE) as a function of diameter, visible albedo, and orbital
elements. Using this technique, we are able to place constraints on the number
of potentially hazardous asteroids (PHAs) larger than 100 m and find that there
are $\sim4700\pm1450$ such objects. As expected, the Atens, Apollos, and Amors
are revealed by WISE to have somewhat different albedo distributions, with the
Atens being brighter than the Amors. The cumulative size distributions of the
various near-Earth object (NEO) subgroups vary slightly between 100 m and 1 km.
A comparison of the observed orbital elements of the various sub-populations of
the NEOs with the current best model is shown.
