  In this paper we present a dynamical model of SUSY breaking with a hybrid
messenger sector. SUSY is broken dynamically at a scale of order $10^9$ GeV via
strong SU(2) gauge interactions. SUSY breaking is then transmitted to the
observable sector via two distinct sources: (1) messengers, carrying Standard
Model gauge quantum numbers, with the messenger mass of order
  $10^{15}$ GeV, and (2) the D term of an anomalous U(1)$_X$. The model is
quite constrained. The messenger scale is fixed by the Fayet-Iliopoulos term
for the anomalous U(1)$_X$ interaction. In addition, we show that the D term
SUSY breaking contributions to squark and slepton masses are "naturally" the
same order as those coming from the messengers.
