The legendary A-10 Thunderbolt "Warthogs", considered by many to be the best ground-attack jet plane every made, have started to fall from the skies in surprising numbers. Has this decades-old craft finally reached its shelf-life or are other factors in play since so many billions are at stake with new technology pending? Miranda Chase and her team do not want to get it the middle of that conflict; they just want to solve a crash mystery. Doing so, though, will put all their lives in danger.