  AI is being increasingly used to aid response efforts to humanitarian
emergencies at multiple levels of decision-making. Such AI systems are
generally understood to be stand-alone tools for decision support, with ethical
assessments, guidelines and frameworks applied to them through this lens.
However, as the prevalence of AI increases in this domain, such systems will
begin to encounter each other through information flow networks created by
interacting decision-making entities, leading to multi-AI complex systems which
are often ill understood. In this paper we describe how these multi-AI systems
can arise, even in relatively simple real-world humanitarian response
scenarios, and lead to potentially emergent and erratic erroneous behavior. We
discuss how we can better work towards more trustworthy multi-AI systems by
exploring some of the associated challenges and opportunities, and how we can
design better mechanisms to understand and assess such systems. This paper is
designed to be a first exposition on this topic in the field of humanitarian
response, raising awareness, exploring the possible landscape of this domain,
and providing a starting point for future work within the wider community.
