Context: Construction began in 1941 of two airbases consisting of 5.8 km2 (2.2 sq mi) of land, largely reclaimed from the sea. For many years, Bermuda's bases were used by US Air Force transport and refuelling aircraft and by US Navy aircraft patrolling the Atlantic for enemy submarines, first German and, later, Soviet. The principal installation, Kindley Air Force Base on the eastern coast, was transferred to the US Navy in 1970 and redesignated Naval Air Station Bermuda. As a naval air station, the base continued to host both transient and deployed USN and USAF aircraft, as well as transitioning or deployed Royal Air Force and Canadian Forces aircraft.

Question: What did the US begin building in 1941?
Answer: two airbases

Question: Who primarily used the bases in Bermuda?
Answer: US Air Force transport and refuelling aircraft and by US Navy aircraft

Question: What was the navy patrolling for?
Answer: enemy submarines, first German and, later, Soviet

Question: What was the Naval Air Station Bermuda originally?
Answer: Kindley Air Force Base

Question: What is the Naval Air Station used for?
Answer: host both transient and deployed USN and USAF aircraft, as well as transitioning or deployed Royal Air Force and Canadian Forces aircraft.

Question: What began in 1914?
Answer: Unanswerable

Question: What consisted of 5.8 sq mi of land?
Answer: Unanswerable

Question: Where was Air Force Base Kindley located?
Answer: Unanswerable

Question: What was transferred to the US Navy in 1907?
Answer: Unanswerable