During World War I, Edison was asked to help the war effort by using his expertise to develop new technologies. He was appointed to the Naval Consulting Board and worked with the Navy to develop new weapons and technologies. One of Edison’s most notable contributions during WWI was the development of the Truman Little White House in Key West, Florida. This facility was used to develop and test new weapons and technologies for the Navy. Edison was also involved in the development of the first submarine detection system, which was used to detect enemy submarines.