Lois McMasters Bujold
C. L. Cherryh
Jim Butcher
Eric Flint
David Drake
Lois McMasters Bujold
C. L. Cherryh
Jim Butcher
Eric Flint
David Drake
Way too many to list but I'll throw out a few.
Clive Barker
Clive Cussler
Vince Flynn
Tom Clancy......Mark Greany
Alex Berenson
Stephen Coonts
Jack DuBrul
Brad Taylor
many more !