On May 26, 1940, FDR delivered a fireside chat to the American people about "the approaching storm", and on June 6 Harrington reprioritized WPA projects, anticipating a major expansion of the U.S. military. "Types of WPA work to be expedited in every possible way to include, in addition to airports and military airfields, construction of housing and other facilities for enlarged military garrisons, camp and cantonment construction, and various improvements in navy yards," Harrington said. He observed that the WPA had already made substantial contributions to national defense over its five years of existence, by building 85 percent of the new airports in the U.S. and making $420 million in improvements to military facilities. He predicted there would be 500,000 WPA workers on defense-related projects over the next 12 months, at a cost of $250 million. The estimated number of WPA workers needed for defense projects was soon revised to between 600,000 and 700,000. Vocational training for war industries was also begun by the WPA, with 50,000 trainees in the program by October 1940.