Tactical Heat — Brandy McKinnon

Ethan only wanted to help people but his father has bastardized his work.
Connor's last mission was to get his men back home save and then their helicopter went down.
Ethan's father is using his life's work to experiment and try to make a super soldiers and Connor and his men are just the test subjects to use.
After escaping; Connor and his men have one advantage they take a scientist with them to try and cure their condition.
Ethan's now in Connor's clutches and he has to figure out just what to do. His father is a monster and he must help Connor and his men to stop him.