The Center for the Study of Traumatic Stress at the Uniformed Services University (USU) and Columbia University were awarded a collaborative $3-million, four-year grant by the Department of Defense Congressionally-Directed Medical Research Program (CDMRP) to support the development and testing of innovative, mobile and web applications designed to help military family members and friends who experienced the death of a servicemember to better manage their grief reactions. These online programs were pilot-tested with content experts, community partners, and end users, and then studied in a randomized controlled trial to test their effectiveness.