  If the electroweak symmetry-breaking sector becomes strongly interacting at
high energies, it can be probed through longitudinal $W$ scattering. We present
a model with many inelastic channels in the $W_L W_L$ scattering process,
corresponding to the production of heavy fermion pairs. These heavy fermions
affect the elastic scattering of $W_L$'s by propagating in loops, greatly
reducing the amplitudes in some charge channels. We conclude that the
symmetry-breaking sector cannot be fully explored by using, for example, the
$W_L^\pm W_L^\pm$ mode alone, even when no resonance is present; all $W_L W_L
\to W_L W_L$ scattering modes must be measured.
