The 2011 winner is Semper Fi: Always Faithful.

Master Sergeant Jerry Ensminger's loyalty belonged to the Marine Corps for 25 years. But when his nine-year-old daughter dies of a rare leukemia, Jerry gives up all else to investigate the cause of her death. His exhaustive search for answers leads to a shocking discovery: one of the largest water contamination cover-ups in US history. Bravely determined to hold the Marine Corps accountable for the unprecedented number of cancer cases and deaths at Marine Corps Base Camp Lejeune in North Carolina, Jerry refuses to settle for the military's dismissive response to the many victims buried under their dubious bureaucracy. Outrage, perseverance, and enduring patriotic duty drive Jerry to reveal this grave national issue before Congress and the American public.

Directors Rachel Libert and Tony Hardmon present a timely and sobering personal story, shining a light on the military's betrayal of American soldiers and their families. The film compels and empowers the viewer to demand the Department of Defense—America's largest polluter, according to the film—to protect its soldiers and civilians from toxic environmental conditions at military sites across the nation.