- "The only easy day... was yesterday."
- — Navy SEALs motto.
The U.S. Navy's Sea, Air and Land Teams (commonly known as Navy SEALs or SEALs) are the elite counter-terrorism/special operations unit of the United States Navy. They are mentioned in Call of Duty 4: Modern Warfare and are seen during the campaigns of Call of Duty: Modern Warfare 2 and Call of Duty: Black Ops II. The Navy SEALs have also been seen during the Call of Duty: Modern Warfare 3 reveal trailer. They are also a playable faction in Call of Duty: Modern Warfare 2's multiplayer. They are mentioned in Call of Duty: Advanced Warfare on the mission "Sentinel".