Question: What does seal stand for in the U.S. military branch that operates destroyers, as well as the USS Edsall?

Knowledge 1: USS Edsall (DE-129)
USS "Edsall" (DE-129) was the lead ship of her class of destroyer escort in the United States Navy. She was the second Navy ship named in honor of Seaman Norman Edsall (1873–1899). [SEP] Knowledge 2: 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 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.
Knowledge 1: USS Kirkpatrick (DE-318)
USS "Kirkpatrick" (DE-318) was an Edsall-class destroyer escort built for the U.S. Navy during World War II. She served in the Atlantic Ocean the Pacific Ocean and provided destroyer escort protection against submarine and air attack for Navy vessels and convoys. Post-war, she was converted to a radar picket ship to support the DEW Line. [SEP] Knowledge 2: 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 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.
Knowledge 1: USS Rhodes (DE-384)
USS "Rhodes" (DE-384) was an "Edsall"-class destroyer escort built for the United States Navy during World War II. She served in the Atlantic Ocean and the Pacific Ocean and provided destroyer escort protection against submarine and air attack for Navy vessels and convoys. Post-war she served the Navy as a radar picket ship. [SEP] Knowledge 2: 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 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