  The satellite-disk interaction provides limits on halo properties in two
ways: (1) physical arguments motivate the excitation of observable Galactic
disk structure in the presence of a massive halo, although precise limits on
halo parameters are scenario-dependent; (2) conversely, the Milky Way as a
whole has significant dynamical effect on LMC structure and this interaction
also leads to halo limits. Together, these scenarios give strong corroboration
of our current gravitational mass estimates and suggests a rapidly evolving
LMC.
