  The gauge bosons and Englert-Brout-Higgs (EBH) boson are unified in the five
dimensional RS spacetime. The EBH boson is identified with a part of the fifth
dimensional component of the gauge potential. In the SO(5) x U(1) gauge-Higgs
unification the EW symmetry is dynamically broken. The EBH boson, predicted
with a mass around 130 GeV, naturally becomes stable so that it appears as
missing energy and momentum in collider experiments. Collider signatures such
as gauge couplings of quarks and leptons and production of KK \gamma and Z are
also discussed.
