  Massless localized vector field is obtained in five-dimensional
supersymmetric (SUSY) QED coupled to tensor multiplets as a half BPS solution.
The four-dimensional gauge coupling is obtained as a topological charge. We
also find all the (bosonic) massive modes exactly for a particular value of a
parameter, demonstrating explicitly the existence of a mass gap. The
four-dimensional Coulomb law is shown to hold for sources placed on the wall.
