  Recent cybersecurity events have prompted the federal government to begin
investigating strategies to transition to Zero Trust Architectures (ZTA) for
federal information systems. Within federated mission networks, ZTA provides
measures to minimize the potential for unauthorized release and disclosure of
information outside bilateral and multilateral agreements. When federating with
mission partners, there are potential risks that may undermine the benefits of
Zero Trust. This paper explores risks associated with integrating multiple
identity models and proposes two potential avenues to investigate in order to
mitigate these risks.
