This opportunity is for a web-based, FedRAMP-certified (Moderate or above) mass notification system to be fully hosted by the vendor for the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). The system must support multi-modal alerting (voice, SMS, email, social media), GIS mapping, and user authentication via government PIV credentials, with a base contract of one year plus four optional years. The vendor must provide 24/7/365 technical support, initial on-site training, and webinar training at no additional cost, with pricing to include an unlimited usage option. The system must be geographically dispersed across the U.S. with failover mechanisms to ensure 100% availability and must comply with all federal security requirements, including Section 508 and ADA standards. Performance of services will be at the vendor-hosted FedRAMP environment, with no specific location for government performance mentioned.