Ann Arbor Area Transportation Authority (AAATA) requests proposals from experienced and qualified professionals to provide an Active Shooter Alert System in accordance with the terms and conditions set forth in this solicitation. The purpose is to increase the current level of security and enhance emergency notifications and responsiveness with a dedicated, specialized system. The system will integrate with the existing infrastructure at AAATA’s Dawn Gabay Operations Center and extend to two transit centers, the Blake Transit Center and the Ypsilanti Transit Center.