Semper Fi: Always Faithful, a documentary from 2011, aims to bring into light one of the largest water contamination incidents in United States history, through the eyes of retired Marine Jerry Ensminger and male breast cancer survivor Michael Partain. The movie is a skillful blend of investigative journalism, environmental, and social issues which spotlights a salient and grievous case of security, justice, and loyalty – highly potent themes tightly intertwined with the ethos of the U.S. Marine Corps.

Both men, who were affected by the contamination, undertake a strenuous journey to uncover the truth about the shocking ignorance and negligence that occurred at Camp Lejeune, a major Marine Corps base in North Carolina. The water supplied to this military base was tainted by harmful chemicals for thirty years, from the mid-1950s to the mid'80s. This led to dire health complications for many military personnel and their families, some of whom succumbed to their illnesses.

Jerry Ensminger was a diligent Master Sergeant at Camp Lejeune when he lost his nine-year-old daughter Janey to leukemia. He feels betrayed by the institution he devoted most of his life to, and he is left rattled and anguished when he learns the water contamination could have been the cause of Janey's sickness. Ensminger emerges as the primary voice in the film, and his mission throughout the narrative is to expose the truth behind the contamination and seek justice for the victims, including his daughter. Years after Janey's passing, Ensminger is still engaged in a battle against the U.S Government, advocating for those who, like him, have been deeply affected by this tragic ordeal.

Michael Partain, on the other hand, is a civilian who was born on the base. His struggle with male breast cancer decades later led him to investigate the water contamination incident. Much like Ensminger, Partain endures a deeply personal and challenging crusade to uncover the truth about the Camp Lejeune contamination.

Semper Fi: Always Faithful takes audiences on a journey exposing shocking revelations of governmental negligence, cover-ups, and a disturbing lack of concern for the human lives compromised by this mishandling. As Ensminger and Partain continue on their relentless pursuit for truth, the dark practices and an egregious lack of transparency within the military's environmental operations are laid bare.

The film effectively highlights the themes of loyalty, truth, and the fight for justice. It provides a meticulous and in-depth examination of large-scale bureaucratic incompetence and secrecy. Furthermore, it underscores the ironies of a public institution falling short of providing safety and severely failing the very patriotic community it is established to protect *the "always faithful".

The filmmakers adeptly balance procedural details with heartrending personal stories, which makes for an emotionally charged narrative that leaves viewers compelled. Semper Fi: Always Faithful is a potent telling of a significant environmental and public health issue that has far-reaching implications.

Both Ensminger and Partain's tenacious pursuit of the truth acts as a deeply moving testament to their courage and resilience in the face of a massive machine like the U.S. military. Their determination to bring justice to all the victims of the disastrous contamination also rings true to the Marine Corps' motto “Semper Fidelis” – a Latin phrase that means "Always Faithful."

In a justice system fraught with red tape, Semper Fi: Always Faithful tells a true David vs. Goliath story of two men's relentless pursuit of the truth, seeking justice for the thousands affected by water contamination at Camp Lejeune. The movie not only serves as a potent muckraking documentary but also a stirring tribute to those who served their country faithfully, only to be let down in their hour of need.

In conclusion, Semper Fi: Always Faithful is an emotionally powerful, revealing, and engaging documentary. It shines a spotlight on an issue of monumental importance while keeping a highly personal and emotional story at its core. With a focus on the power of conviction and unwavering loyalty, this narrative is more than just an expose; it drives home the message that the fight for justice is ceaseless and it reminds us all of the far-reaching impacts of apathy and ignorance at systemic levels.