When audiences watch a historical documentary, they often assume every voice they hear belongs to a professional actor or narrator. While that’s frequently the case, some productions make a different choice, one driven by authenticity rather than acting credits.
Netflix’s new documentary series The American Experiment offers a compelling example. Alongside veteran actor Martin Sheen, the production enlisted dozens of historians, military veterans, first responders, educators, and other subject-matter experts to perform voiceover roles throughout the series. One of those voices belongs to Dr. Andrew Wiest, a military historian and professor at the University of Southern Mississippi, whose unexpected casting highlights an interesting trend in documentary voiceover.
Rather than relying entirely on traditional performers, the series demonstrates how expertise itself can become part of the storytelling.
A Historian Finds Himself Behind the Microphone
Dr. Andrew Wiest has spent much of his career researching military history, writing books, and teaching students about the people and events that shaped America. Voice acting, however, was never part of his professional plans.
That changed when Reel2Reel Casting contacted him about participating in a new documentary project. Initially, Wiest knew very little about the production. As details emerged, he learned the project was The American Experiment, Netflix’s ambitious five-part documentary exploring the nation’s history as part of the United States’ 250th anniversary celebration. The series is executive produced by Tom Hanks’ Playtone alongside director Brian Knappenberger.
Instead of serving as a traditional narrator, Wiest was asked to voice historical writings and figures connected to America’s founding era. His recordings included passages drawn from documents such as the Declaration of Independence, the Constitution, and other writings central to the documentary’s historical narrative.
The work was recorded remotely under the guidance of the production team, allowing directors to shape pacing, emphasis, and delivery while preserving the natural authority that comes from someone who has spent decades studying the material. Wiest later remarked that reading famous historical documents convincingly proved far more challenging than he expected. Familiar words carried enormous historical weight, and delivering them naturally required far more precision than simply reading from a page.
Authenticity Became Part of the Casting Process
Wiest was not an isolated casting decision.
According to Netflix, The American Experiment intentionally combined professional performers with more than thirty subject-matter experts from a wide range of professions. Historians, military personnel, firefighters, civil servants, educators, and other specialists were invited to lend their voices to historical figures, letters, speeches, and primary documents that appear throughout the series.
Martin Sheen, one of Hollywood’s most respected actors, voices George Washington, bringing dramatic experience to one of the documentary’s central historical figures. Around him, however, the production chose experts whose professional backgrounds aligned with the material they were reading.
The approach creates a different listening experience than audiences might expect from a fully dramatized documentary. Instead of every performance feeling theatrical, many of the readings carry the measured cadence of people who have devoted their careers to understanding the events they describe. The result is a blend of performance and scholarship designed to reinforce the documentary’s educational focus.
This type of casting also reflects the increasing sophistication of documentary storytelling. Modern productions often look beyond traditional casting pools when authenticity can strengthen the emotional connection between viewers and the subject matter.
Documentary Voiceover Continues to Evolve
Voice acting is often associated with animation, video games, commercials, or audiobooks, but documentary production remains one of the industry’s most specialized areas.
Narration requires clarity and consistency, while reenacted readings call for a more subtle balance. Performers must communicate emotion without overshadowing historical accuracy, allowing original documents and firsthand accounts to remain the focus of the story.
In recent years, documentary filmmakers have experimented with different approaches to achieve that balance. Some productions rely entirely on established actors. Others cast journalists, authors, scientists, or historians whose professional credibility adds another layer of authenticity to the material. The decision depends on the story being told and the experience filmmakers want audiences to have.
The American Experiment illustrates how those two approaches can work together. Professional actors provide dramatic interpretation where appropriate, while subject-matter experts contribute voices shaped by years of research and firsthand knowledge. Rather than competing with one another, the two styles complement the documentary’s broader goal of presenting American history through multiple perspectives.
For viewers, the distinction may not always be obvious. The voice simply feels believable. Behind the scenes, however, those casting decisions reflect careful consideration about who is best suited to tell a particular part of the story.
A Reminder That Voice Talent Comes in Many Forms
Wiest’s participation serves as a reminder that compelling voice performances do not always begin with a traditional acting career.
Across the voiceover industry, projects occasionally call for people whose expertise carries as much value as their vocal ability. Medical documentaries may feature practicing physicians. Nature productions sometimes include scientists or conservationists. Historical projects may turn to scholars who understand not only the words they are reading, but also the context behind every sentence.
That does not replace the work of professional voice actors. Instead, it demonstrates how diverse the voiceover landscape has become. Different productions require different strengths, and documentary storytelling often benefits from blending performance with real-world experience.
For Wiest, the opportunity offered an unexpected chance to contribute to a major Netflix production in a completely different way than his academic career had prepared him for. For the voiceover community, it highlights another corner of the profession where authenticity, credibility, and storytelling intersect.
As documentaries continue pushing for greater realism, casting choices like these may become increasingly common. Sometimes the most effective voice for a historical story is not simply the one with the most acting experience, but the one with the deepest connection to the history itself.