the southern side of Bennett Field. The NYPD Aviation Unit resumed its operations at the Naval Air Reserve base. By 1947, there were proposals to use Bennett Field for commercial purposes again. The airport would have handled the excess traffic from LaGuardia Airport while LaGuardia was being repaired and Idlewild (now JFK) Airport was being built. In April 1947, the city and the Port Authority of New York and New Jersey made a preliminary agreement that allowed the Port Authority to take over operations of all airports in New York City by June. The Port Authority hoped to spend $1.5 million to improve facilities for airlines with foreign registrations. However, the partial conversion of Bennett Field commercial use was delayed over concerns of cost: the Navy estimated that it would cost $1.2 million to move its facilities, but the Port Authority would not spend more than $750,000 for the Navy to do this. The Navy mostly operated on the southern and eastern parts of the airport during this time. By September 1947, the Port Authority and the Navy were deadlocked, unable to reach an agreement. Commercial traffic at Floyd Bennett Field ultimately never materialized, as the airspace congestion near LaGuardia Airport was resolved. The Navy allowed New York Air National Guard and the U.S. Army Air Reserve to use the hangars on the condition that their activities did not interfere with the Navy's. The Coast Guard regained control of CGAS Brooklyn, and it also began leasing nearly of the Navy base adjoining CGAS Brooklyn's southern border. By 1950, Cold War and Korean War preparations were underway, and the Navy needed to use Bennett Field's facilities again. However, Bennett Field was less busy during the Korean War than during World War II. Five reserve squadrons based at Bennett Field were recalled to active duty for the Korean War. Some minor modifications were made during this time. The Navy lengthened three runways, reconstructed roads and taxiways, built a beacon tower and veterans' housing, and added some fuel storage containers. A new southern entrance was built because one of the runway extensions overlapped with the old entrance. The Navy abandoned many of the original buildings on the western side of the field, instead moving to the eastern side. The Coast Guard made even fewer modifications: it expanded its apron, built a small hangar, and replaced its wooden seaplane ramp with a concrete one.