Timothy Zahn 
From the Ashes 

From The Ashes, written by Hugo Award-winning author Timothy Zahn, is an exciting all-new story set in the universe of Terminator: Salvation. In post-Judgment Day LA, two lost kids named Kyle and Star keep watch for Terminators; a jaded Marine struggles to keep his rag-tag community together in the face of unrelenting danger; and John and Kate Connor assemble their Resistance team for a brutal assault on a deadly enemy.