sentences:  After the war ended, he returned to Canada where reportedly in May 1919 he "constructed a small station in Halifax, Nova Scotia, over which voice and music were broadcast in probably the first scheduled programs in Canada".In 1920 Grant began working for the Canadian Air Board's Forestry patrol, developing air-to-ground communication for the spotter aircraft used to report forest fires, initially using radiotelegraphy.The original base was located at Morley, Alberta, where Grant constructed station CYAA.