Angels and Their Hourglasses

Stranded in 1929, a time traveler struggles to convince a sleepy country that America must prepare to defend itself against its friends, the Japanese, in 1941. Eighty years in the past, Ben Ryan must start again. He learns to live and love, and he plans for a future nobody wants to hear about. Then he meets Howard Hughes, who believes him and forms a consortium comprised of fellow industrialists. They prepare in every way they can without the backing of the US government. The Japanese learn of their efforts, and move up their plans to attack Pearl Harbor in December 1939, two years earlier than the original history. The consortium learns this, but they're still short of planes, supplies, and pilots. Is their hard work all for nothing? The race is on.