  We fit Chandra HETGS data obtained for the unusual X-ray binary SS 433. While
line strengths and continuum levels hardly change, the jet Doppler shifts show
aperiodic variations that probably result from shocks in interactions with the
local environment. The X-ray and optical emission line regions are found to be
related but not coincident as the optical line emission persists for days while
the X-ray emission lines fade in less than 5000 s. The X-ray spectrum of the
blue-shifted jet shows over two dozen emission lines from plasma at a variety
of temperatures. The emission measure distribution derived from the spectrum
can be used to test jet cooling models.
