James Grady 
This Given Sky [EPUB ebook] 

A haunting short story about friendship and loss in small-town Montana Jake, Steve, and Thel are inseparable. The trio scampers through the narrow streets of Shelby without giving thought to the rest of the world. Then Jake’s life changes the first time he goes up in a plane: That ride in a battered old Mustang P-51 teaches him that no one but pilots can know true freedom. He joins the Air Force and comes back to Shelby when he’s on leave. Steve and Thel stay behind, making lives in the tough heartland town in Montana. Though farther apart, they remain a groupand will stay that way, whether they live or die.