This collection contains six papers that were presented at sessions sponsored by ACI Committee 544 at the Spring 2008 ACI Convention in Los Angeles, CA, and the Spring 2009 ACI Convention in San Antonio, TX. The papers provide insight into the state of the art of the topic in academia, the industry, and real-life applications and cover some of the benefits of using fibers to enhance long-term performance of concrete with and without conventional reinforcement.