FirstNet is a dedicated broadband network designed specifically for first responders, established by the First Responder Network Authority after the 9/11 attacks. Its primary goal is to provide reliable communication for public safety agencies, ensuring they have priority access to a network capable of transmitting large volumes of mission-critical information, even during major incidents when conventional networks may become congested.

FirstNet enhances emergency response by providing first responders with priority access and preemption capabilities, allowing them to communicate effectively even when commercial networks are overloaded. It supports real-time data sharing, such as video and geolocation services, which improves situational awareness and resource management during critical incidents.

Eligibility for FirstNet is divided into two categories: Primary Users, which include first responders like law enforcement, fire services, and emergency medical services; and Extended Primary Users, which consist of supporting organizations such as emergency room personnel and public works agencies that assist during or after incidents.