  Anomalous U(1)s are omnipresent in realizations of the Standard Model using
D-branes. Such models are typically non-supersymmetric, and the anomalous U(1)
masses are potentially relevant for experiment. In this paper, the string
calculation of anomalous U(1) masses (hep-th/0204153) is extended to
non-supersymmetric orientifolds.
