  Strong WW scattering at the LHC is discussed as a manifestation of
electroweak symmetry breaking in the absence of a light Higgs boson. The
general framework of the Higgs mechanism -- with or without a Higgs boson -- is
reviewed, and unitarity is shown to fix the scale of strong WW scattering.
Strong WW scattering is also shown to be a possible outcome of five-dimensional
models, which do not employ the usual Higgs mechanism at the TeV scale.
Precision electroweak constraints are briefly discussed. Illustrative LHC
signals are reviewed for models with QCD-like dynamics, stressing the
complementarity of the W^{\pm}Z and like-charge W^+W^+ + W^-W^- channels.
