Question: What does seal stand for in the operator of the list of destroyer classes of the operator of the USS Tringa seals?

Knowledge 1: United States Navy SEALs
The Navy needed to determine its role within the special operations arena. In March 1961, Admiral Arleigh Burke, the Chief of Naval Operations, recommended the establishment of guerrilla and counter-guerrilla units. These units would be able to operate from sea, air or land. This was the beginning of the Navy SEALs. All SEALs came from the Navy's Underwater Demolition Teams, who had already gained extensive experience in commando warfare in Korea; however, the Underwater Demolition Teams were still necessary to the Navy's amphibious force. [SEP] Knowledge 2: United States Navy SEALs
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. [SEP] Knowledge 3: John W. Nyquist
John Walfrid Nyquist (born February 11, 1933) is a retired a vice admiral in the United States Navy. He was born in San Diego, California, the son of rear admiral Nels Walfrid Nyquist and Irma Beske. He attended the University of Minnesota and United States Naval Academy, graduating from the latter in 1955. He is a former commander of Destroyer Squadron 26, Destroyer Squadron 20, USS "Semmes" (DDG-18) and Cruiser-Destroyer Group Five. He also worked in the Office of the Chief of Naval Operations as Assistant Deputy Chief of Naval Operations, Surface Warfare, and Assistant Chief of Naval Operations, Surface Warfare. He retired in 1991. His awards include the Distinguished Service Medal, the Legion of Merit, the Bronze Star, the Meritorious Service Medal, the Navy Commendation Medal two Meritorious Unit Commendations. In retirement he worked for Trex Enterprises Corporation, and is currently a defense consultant. He resides in Coronado, California, with his wife Penelope Ann Lyon.
Knowledge 1: United States Navy SEALs
The Navy needed to determine its role within the special operations arena. In March 1961, Admiral Arleigh Burke, the Chief of Naval Operations, recommended the establishment of guerrilla and counter-guerrilla units. These units would be able to operate from sea, air or land. This was the beginning of the Navy SEALs. All SEALs came from the Navy's Underwater Demolition Teams, who had already gained extensive experience in commando warfare in Korea; however, the Underwater Demolition Teams were still necessary to the Navy's amphibious force. [SEP] Knowledge 2: United States Navy SEALs
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. [SEP] Knowledge 3: USS Pegasus (PHM-1)
USS "Pegasus" (PHM-1) was the lead ship of her class of hydrofoils operated by the United States Navy. "Pegasus" class vessels were designed for high speed and mobility, and carried a powerful armament for their size.
Knowledge 1: United States Navy SEALs
The Navy needed to determine its role within the special operations arena. In March 1961, Admiral Arleigh Burke, the Chief of Naval Operations, recommended the establishment of guerrilla and counter-guerrilla units. These units would be able to operate from sea, air or land. This was the beginning of the Navy SEALs. All SEALs came from the Navy's Underwater Demolition Teams, who had already gained extensive experience in commando warfare in Korea; however, the Underwater Demolition Teams were still necessary to the Navy's amphibious force. [SEP] Knowledge 2: United States Navy SEALs
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. [SEP] Knowledge 3: USS Watts (DD-567)
USS "Watts" (DD-567) was a "Fletcher"-class destroyer of the United States Navy. It was named for Captain John Watts ("ca."1778–1823), who fought French privateers during the Quasi-War with France.

Answer: Sea, Air, and Land