16 books • 5 series
Book #2: Total Empire
Book #3: The Phalanx Code
Book #3: Besieged
Book #1: Foreign and Domestic
Book #2: Three Minutes to Midnight
Book #4: Direct Fire
Book #5: Dark Winter
Book #1: Ghost Target
Book #2: Threat Zero
Book #3: Drone Strike
Book #1: Sudden Threat
Book #2: Rogue Threat
Book #3: Hidden Threat