Fear No Darkness. Ghost Squadron, #4

The Commonwealth is teetering on its last legs. But will it go down gently or dissolve into a civil war as brutal as any in human history? That is the dilemma Colonel Zack Decker and Ghost Squadron face as they're tapped to protect a last-ditch effort to salvage a possibility of peace. And that last ditch effort is being held on Decker's home planet, a place he left long ago to put as many light years as possible between himself and a family who disapproved of his becoming a Marine.
Yet things are not what they seem, and between his family and ardent secessionists wanting to end the Commonwealth, Decker has his hands full. However, he's sworn an oath and intends to keep it because he's still one of the Few.