The Threat series is a series of books by American novelist A.J. Tata. The Threat series encompasses all of A.J. Tata’s published works as of this writing. The series features two brothers, Matt and Zachary.


A.J. Tata is an American author of action/thriller military fiction. He writes the Threat series. Following his military career, A.J. Tata has found a second career as an author. Tata’s military career lasted 28 years, from 1981 until 2009. Tata donated $27,000 of the proceeds for Sudden Threat to a Wounded Warriors fund.