Definitions:

DIN (Disaster Information Network): A robust, integrated, virtual network for cooperative exchange of timely, relevant data and information that can be used during all phases of disaster management to save lives and reduce economic loss.

NDIN (National Disaster Information Network): A specific, country focused Disaster Information Network, ex. the US-National Disaster Information Network.

GDIN (Global Disaster Information Network): The network of NDINs among the nations of the world.

US-DIN (US Disaster information Network): An approach, under development by the Western Disaster Center, to establish a US National Disaster Information Network