Star Trek: Vanguard is a series of Star Trek tie-in fiction novels set during the 2260s, or the time period concurrent with Star Trek: The Original Series. The series is written by Kevin Dilmore, David Mack, and Dayton Ward. Distant Early Warning (2006), a Star Trek: Corps of Engineers novella by Dayton Ward and Kevin Dilmore, is a prequel to Vanguard, introducing the setting and several characters. Star Trek: Seekers (2014–15), also written by Dilmore, Mack, and Ward, is sequel series. Source: Wikipedia (en)