Billy Anderson, whose 35-year-old son, Jason, of Midfield, Texas, died in the blast, recalled the trauma of watching the disaster play out on television.
Among these free resources are a series of general information sheets on specific types of blast injury developed together with the American Trauma Society.
"All I feel is joy, " said Dr. George Velmahos, chief of trauma surgery at Massachusetts General Hospital, referring to his hospital's 31 blast patients.