Broad band spectral energy distribution (SED) modeling and VLBI studies of radio loud AGN are two of the most powerful tools we have to study the nature of their high energy gamma-ray emission mechanisms. I will present the results of a few broadband SED studies of Fermi detected blazars and I will discuss the results of multi epoch VLBI observations of the radio galaxy 3C84. Blazars and and other radio loud AGN only differ by the viewing angle therefore many of the same physical processes occur in both types of objects. 3C84 is interesting because it is nearby (z= 0.017559) and it is one of the few misaligned gamma-ray emitting radio loud AGN.
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