The Polaris Protocol

Pike and Jennifer are in Turkmenistan with the Taskforce when Jennifer gets a call from her brother Jack. Working on an investigative report into the Mexican drug cartels, Jack Cahill has unknowingly gotten caught between two rival groups. His desperate call to his sister is his last before he's kidnapped. In their efforts to rescue Jack, Pike and Jennifer uncover a plot much more insidious than illegal drug trafficking: the cartel that put a target on Jack's back has discovered a GPS hack with the power to effectively debilitate the United States.