  Defining and measuring trust in dynamic, multiagent teams is important in a
range of contexts, particularly in defense and security domains. Team members
should be trusted to work towards agreed goals and in accordance with shared
values. In this paper, our concern is with the definition of goals and values
such that it is possible to define 'trust' in a way that is interpretable, and
hence usable, by both humans and robots. We argue that the outcome of team
activity can be considered in terms of 'goal', 'individual/team values', and
'legal principles'. We question whether alignment is possible at the level of
'individual/team values', or only at the 'goal' and 'legal principles' levels.
We argue for a set of metrics to define trust in human-robot teams that are
interpretable by human or robot team members, and consider an experiment that
could demonstrate the notion of 'satisficing trust' over the course of a
simulated mission.
