  We briefly report here on our ongoing X-ray spectroscopy and variability
analyses of 136 faint X-ray sources discovered in the 2 Ms Chandra Deep Field
North observations spanning 1.4x10-15 to 2x10-13 ergs s-1 cm-2. Most sources
are adequatley fitted with a simple intrinsic absorption plus power-law model,
although the resulting photon index is much lower than the canonical average
unabsorbed spectral slope found locally (suggesting additional spectral
complexity). Among the 136 sources, 7% show significant Fe (Ka) emission
features, with equivalent widths in the range 0.1-1.3 keV. Two of these
emission-line sources appear to be Compton thick. For the subset of sources
with redshifts, we also find that fewer than 10% are likely to be Compton
thick. Finally, ~60% of the sample show signs of long-term variability. This
fraction climbs to ~90% for the bright sources (>500 cnts) or BLAGN.
