Mercy kill - Aaron Allston

The X-Wing/Wraith Squadron books are one of the most popular series in the
history of Star Wars novels. Now, the intrepid spy/pilots of Wraith Squadron
are back in an all-new Star Wars adventure set in the time just after the
events of the New York Times bestselling Fate of the Jedi series!

Wraith Squadron was Wedge Antilles's boldest creation: a covert-action unit of
X-Wing fighters, its pilots drawn from the dregs of other units, castoffs and rejects
given one last chance. Now, years after their thrilling adventures during and after
the Rebellion that destroyed the Empire, they're back to deal with a brand-new
mission!