  In a Lorentz- and CPT-violating modification of electrodynamics, the fields
of a moving charge are known to have unusual singularities. This raises the
question of whether the singular behavior may include $\delta$-function contact
terms, similar to those that appear in the fields of idealized dipoles.
However, by calculating the magnetic field of an infinite straight wire in this
theory, we demonstrate that there are no such contact terms in the magnetic
field of a moving point charge
