Specialist Brian K. Arsenault was a U.S. Army paratrooper known for his respectful manners, wit and desire to serve in the military, according to The Boston Globe. He was due to complete his tour in Afghanistan in November. His father told the newspaper, “We must be strong for our son, who has given his life for a cause that he believed in.” His father now keeps a hockey puck in his pocket to remind him of the times they spent playing together.