Warriors by Nicholas Sansbury Smith

From Nicholas Sansbury Smith, the bestselling author that brought you the award-winning Extinction Cycle series, comes the second installment in the thrilling new Hell Divers trilogy.
Ten years ago, Hell Diver Xavier ''X'' Rodriguez fell to Earth. Those he left behind went on without him aboard the airship he once called home. Michael Everheart – the boy once known as Tin – has grown into a man and the commander of Hell Diver Raptor Team…

An army advances…
In Europe, Master Sergeant Joe Fitzpatrick and Team Ghost return from a mission deep into enemy territory only to find that the Variant army has grown stronger, and they are advancing toward the EUF’s stronghold in Paris.
On the brink of Civil War…