  We discuss an extension of the Standard Model with a new vector-boson
decaying predominantly into a multi-photon final state through intermediate
light degrees of freedom. The model has a distinctive phase in which the
photons are collimated. As such, they would fail the isolation requirements of
standard multi-photon searches, but group naturally into a novel object, the
photon-jet. Once defined, the photon-jet object facilitates more inclusive
searches for similar phenomena. We present a concrete model, discuss
photon-jets more generally, and outline some strategies that may prove useful
when searching for such objects.
