All books are standalones but you get more out of the backstories by reading in order.
Shadow of a Chance
Shadow of Hope
Shadow SEALs/HC Heroes/slight Dangerous Curves Crossover
The Dangerous Curves Series
More than curves make these women dangerous...
Knight's SEAL
Locke and Load
A Daye with a SEAL
Cowboy Lawe
~Dangerous Curves Crossovers~
SEAL in Charge
Grinch Reaper
Elite Protector