Fight the Aliens

Slave-taking Aliens invade the Solar system and attack Earth to teach humanity it cannot overthrow the millennia-old system of Buyers, Market worlds and Collector ships. Former SEAL Bill MacCarthy and Air Force captain Jane Yamaguchi lead America and the world in a fight against six invading Collector ships. But even with the help of two American subs and two small transports, their ship Blue Sky is badly outgunned. Can they win this fight? Or will they and all humans end up as slaves sold at the nearby Market world?