  Recent detections of very-high-energy (VHE, E > 100 GeV) gamma-ray blazars
which do not belong to the high frequency peaked BL Lac (HBL) class, suggest
that gamma-gamma absorption and pair cascading might occur in those objects. In
the presence of even weak magnetic fields, these Compton-supported pair
cascades will be deflected and contribute to the Fermi gamma-ray flux of radio
galaxies. We demonstrate that, in this scenario, the magnetic field can not be
determined from a fit of the cascade emission to the gamma-ray spectrum alone,
and the degeneracy can only be lifted if the synchrotron emission from the
cascades is observed as well. We illustrate this fact with the example of NGC
1275. We point out that the cascade synchrotron emission may produce spectral
features reminiscent of the big blue bump observed in the spectral energy
distributions of several blazars, and illustrate this idea for 3C 279.
