The Sentinels

From publisher blurb: Welcome to the Sentinels! The Sentinels Agenda is a program overseen by CASTLE (the "Committee of Advanced Strategy, Technology, and Law Enforcement") to bring together extraordinary individuals to deal with impossible problems. It's had a revolving membership over the years, but began with a core of two CASTLE agents, Knight Ranger (a PL 9 expert archer), and Red Widow (a PL 9 covert agent).