Fonseca, 2021 states that
On other side of the argument, how do we bring a global health approach to vaccine regulation? Cooperation among well-resourced regulatory authorities has been discussed by the FDA (National Academies of Sciences Engineering and Medicine 2019), but there are many challenges because of institutional legacies, technical, and financial resources, and areas of expertise. At the center of the problem is lack of trust (Benish & Levi-Faur 2020). Collaboration during crisis management will require trusting relationships between actors of regulatory regimes. There is an increasing interest in the study of trust relationships within regulatory regimes; for instance, the Trust in Governance and Regulation in Europe (TiGRE),2 a European Union Horizon 2020 initiative, which brings together leading scholars in the field of regulation and is well-equipped to investigate these questions.
I understand that actors of regulatory regimes are polices, military,... but I do not understand what does "trusting relationships between actors of regulatory regimes" mean. Is there any example to explain this phrase?