As depicted, Navy SEALs do not wear or acknowledge rank during ops, do not wear SEAL-specific insignia, nor call each other by a surname (Caulter being an exception in the show). Members are identified solely by first name or more often, a nickname given by his team.
Filmed in Wilmington, North Carolina
The United States Navy's "Sea, Air, and Land" Teams, commonly abbreviated as the Navy SEALs, are the U.S. Navy's primary special operations force and a component of the Naval Special Warfare Command. Among the SEALs' main functions are conducting small-unit maritime military operations that originate from, and return to, a river, ocean, swamp, delta, or coastline. The SEALs are trained to operate in all environments (Sea, Air, and Land) for which they are named.
Joe Manganiello was set to play the character 'Rip' but he had to pull out of the project due to a health issue.
It is a common misconception that Hollywood must have "3 points of error" when portraying the men and women of the US Armed Forces. As a matter of fact, this myth has been debunked by many credible sources, to include Department of Defense, Director of Entertainment Media, whose office actually encourages filmmakers to get the uniforms correct. Also, U.S. Code Title 10 Subtitle A Part II Chapter 45 772 states that: "While portraying a member of the Army, Navy, Air Force, or Marine Corps, an actor in a theatrical or motion-picture production may wear the uniform of that armed force if the portrayal does not tend to discredit that armed force." Proper credit, it would seem, is defined pretty loosely, as most inaccuracies are not a result of purposeful mistakes, but by a lack of research and/or proper military advising.