These include increased battery life on underwater locator beacons , lengthening Expansion of recording Recording times on flight data recorders and cockpit voice recorders , and new standards for aircraft position reporting Reporting over open Openness ocean .

From 1941 until 1945 , the United States established Building numerous and extensive facilities for air and sea traffic in Greenland , as well as radio beacons , radio stations , weather stations , ports , depots , artillery posts , and search-and-rescue stations .

The brigade 's pathfinders landed Self_motion accurately and set up Building their homing beacons , but the main body of the brigade landed Self_motion over a large area , some away .