Question: What does seal stand for in the division of the U.S. military branch that operates destroyer classes and the USS Chinquapin?

Knowledge 1: List of destroyer classes of the United States Navy
The first major warship produced by the U.S. Navy after World War II (and in the Cold War) were "frigates"—the ships were originally designated destroyer leaders but reclassified in 1975 as guided missile cruisers (except the became guided missile destroyers). These grew out of the last all-gun destroyers of the 1950s. In the middle 1970s the s entered service, optimized for anti-submarine warfare. A special class of guided missile destroyers was produced for the Shah of Iran, but due to the Iranian Revolution these ships could not be delivered and were added to the U.S. Navy. [SEP] Knowledge 2: Rudy Boesch
Boesch was born and raised in Rochester, New York, and enlisted in the United States Navy at age 17. He became a Underwater Demolition Team (UDT) Frogman in 1951, serving on two UDT Teams. He was chosen as one of the first SEALs, becoming Chief of the Boat of newly created SEAL Team TWO in 1962. Starting in 1968 and 1970, Boesch completed two combat deployments during the Vietnam War, where he earned the Bronze Star for heroic action. During that time and later, Boesch set physical and operational standards at SEAL Team TWO. In 1987, he became Senior Enlisted Advisor for United States Special Operations Command. Designated the "Bullfrog", the longest-serving SEAL still on active duty, Boesch achieved considerable renown within the force for his physical fitness training regimens and his military appearance. After 45 years of continuous service, he retired from the Navy in 1990 as a Master Chief Petty Officer. [SEP] Knowledge 3: 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.
Knowledge 1: List of destroyer classes of the United States Navy
The first major warship produced by the U.S. Navy after World War II (and in the Cold War) were "frigates"—the ships were originally designated destroyer leaders but reclassified in 1975 as guided missile cruisers (except the became guided missile destroyers). These grew out of the last all-gun destroyers of the 1950s. In the middle 1970s the s entered service, optimized for anti-submarine warfare. A special class of guided missile destroyers was produced for the Shah of Iran, but due to the Iranian Revolution these ships could not be delivered and were added to the U.S. Navy. [SEP] Knowledge 2: Rudy Boesch
Boesch was born and raised in Rochester, New York, and enlisted in the United States Navy at age 17. He became a Underwater Demolition Team (UDT) Frogman in 1951, serving on two UDT Teams. He was chosen as one of the first SEALs, becoming Chief of the Boat of newly created SEAL Team TWO in 1962. Starting in 1968 and 1970, Boesch completed two combat deployments during the Vietnam War, where he earned the Bronze Star for heroic action. During that time and later, Boesch set physical and operational standards at SEAL Team TWO. In 1987, he became Senior Enlisted Advisor for United States Special Operations Command. Designated the "Bullfrog", the longest-serving SEAL still on active duty, Boesch achieved considerable renown within the force for his physical fitness training regimens and his military appearance. After 45 years of continuous service, he retired from the Navy in 1990 as a Master Chief Petty Officer. [SEP] Knowledge 3: 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.
Knowledge 1: List of destroyer classes of the United States Navy
The first major warship produced by the U.S. Navy after World War II (and in the Cold War) were "frigates"—the ships were originally designated destroyer leaders but reclassified in 1975 as guided missile cruisers (except the became guided missile destroyers). These grew out of the last all-gun destroyers of the 1950s. In the middle 1970s the s entered service, optimized for anti-submarine warfare. A special class of guided missile destroyers was produced for the Shah of Iran, but due to the Iranian Revolution these ships could not be delivered and were added to the U.S. Navy. [SEP] Knowledge 2: USS Chinquapin (AN-17)
USS "Chinquapin" (YN-12/AN-17) was an built for the United States Navy during World War II. Originally ordered as USS "Fir" (YN-2), she was renamed and renumbered to "Chinquapin" (YN-12) in October 1940 before construction began. She was launched in July 1941, and completed in October 1941. Placed in service at that time without being commissioned, she was commissioned in January 1943, and decommissioned in March 1946. She was placed in reserve at that time and scrapped in 1976. [SEP] Knowledge 3: HMS Seal (1897)
HMS "Seal" was a B-class torpedo boat destroyer of the British Royal Navy. She was completed by Laird, Son & Company, Birkenhead, in 1897.

Answer: Sea, Air, and Land