This document discusses the need for an identity ecosystem to enable single sign-on and centralized credential management for first responders. It provides examples of how various public safety mobile applications could leverage APIs protected by access tokens to securely share identity and context information. This would allow real-time health monitoring, location tracking, video streaming, and records access on a single authenticated device. The examples show how a trusted authority could issue access tokens to enable these different use cases throughout a first responder's shift.