Context: On the eve of America's entry into World War II, CAA began to extend its ATC responsibilities to takeoff and landing operations at airports. This expanded role eventually became permanent after the war. The application of radar to ATC helped controllers in their drive to keep abreast of the postwar boom in commercial air transportation. In 1946, meanwhile, Congress gave CAA the added task of administering the federal-aid airport program, the first peacetime program of financial assistance aimed exclusively at promoting development of the nation's civil airports.

Question: When did the CAA begin to exptend it's ATC responsibilities?
Answer: World War II

Question: What helped ATC controllers in their drive ot keep ahead of the postwar boom in commercial air transportation?
Answer: radar

Question: When did Congress give the CAA the task of administering the federal-air airport program?
Answer: 1946

Question: What did the federal-aid airport program aim to help develop?
Answer: civil airports

Question: When did America enter World War II?
Answer: Unanswerable

Question: When did the CAA begin to extend it's ATC responsibilities at military airports?
Answer: Unanswerable

Question: What was the first wartime program of financial assistance  aimed at promoting the development of civil airports?
Answer: Unanswerable

Question: When did congress extend it's ATC responsibilities to takeoff and landing operations at airports?
Answer: Unanswerable

Question: When did radar technology become permanent?
Answer: Unanswerable