In 1938, he registered British Guiana Airways Limited. Also known as B.G. Airways, Williams was contracted by the government doing mail delivery and survey work.[1] During World War II volunteered for service, performing anti-submarine patrols until he was called up for military service as Major in the U.S. Air force.[2]
Willams was also advisor for the development of Atkinson Field and many hinterland airstrips.[2]
On April 1, 1942, Major Williams, accompanied by Thomas Persaud, flew into the Orinoco Delta and rescued 20 men from a US Army plane which had lost its way, and had crash-landed on the Venezuelan Coast. In May 1943, when a US C54, which was carrying headquarters staff to China with gold bullion, made a forced landing on the Ituribisi River.[2]