This Disclosure Foundation white paper examines how official UAP and possible NHI disclosure could affect individuals, communities, and public systems. Drawing mainly on psychology, public health, disaster response, and risk-communication research, it argues that responses would be heterogeneous and that the chief operational risk is concentrated strain on behavioral-health and support systems rather than mass panic. It recommends coordinated preparedness, scalable care capacity, transparent communication, public psychoeducation, community support, ethical safeguards, and further empirical research, while emphasizing that the UAP/NHI-specific evidence base remains limited and the ultimate disclosure scenario is unknown.