Sierra Six
Mark Greaney
Gray Man (11)
On Target
Gray Man (2)
Mission Critical
Gray Man (8)
Gunmetal Gray
Gray Man (6)
The Teeth of the Tiger
Tom Clancy
Jack Ryan, Jr. (1)
Locked On
Jack Ryan, Jr. (3)
Command Authority
Jack Ryan (9)
Armored
Joshua Duffy (1)
Burner
Gray Man (12)
Back Blast
Gray Man (5)
Dead Eye
Gray Man (4)