Pike Logan series by Brad Taylor

One Rough Man (#1): Commissioned at the highest level of the U.S. government, the fighting team known as Taskforce operates outside the law. Pike Logan was the most successful operator on the Taskforce until tragedy permanently altered his outlook. Pike knows what the rest of the country might not want to admit: the real threat is one or two men in possession of a powerful weapon. Buried in a stack of intercepted chatter is evidence of two such men-their attack only days away. It is their bad luck that they're about to cross paths with Pike Logan...

All Necessary Force (#2): A terrorist hit is coming. CIA, FBI, and Department of Defense systems have spiked, but traditional intel is going nowhere. It falls to the Taskforce—a top secret team that exists outside the bounds of U.S. law and is charged with finding and destroying asymmetric threats—to stop the unknown conspirators…

A shadowy trail leads the Taskforce to Egypt—where an attack leaves one Taskforce member dead and another barely alive. Veteran warrior Pike Logan and his young partner, Jennifer Cahill, are forced to helm the increasingly convoluted and dangerous mission: a mission that tests both Jennifer's ability to justify her actions, and Pike's tenuous ability to stay in control.

Sifting their way through the opposing plots of two terrorist organizations will turn out to be the least of their problems when a weapon of unthinkable power touches American soil—the only country in which Taskforce members are forbidden to operate, and the only country that Pike Logan may be unable to save…

Callsign: A Taskforce Novel (#2.5): Commissioned at the highest level of the U.S. government, and designed to operate outside the bounds of U.S. law, a new counter-terrorist unit known as the Taskforce has just been formed, but not fully tested. Until now. Pike Logan has been given a team of operators drawn from the CIA's National Clandestine Service and the military's Special Operations Forces without any say in selecting the men on which he must depend. While executing a full mission profile exercise on U.S. soil, a target of opportunity appears before the Taskforce is deemed mission capable. Forced to execute, Pike and his team are sent to Yemen to track their first real target. The future of the Taskforce depends on their success, but when Pike is challenged by one of his own, their clear-cut mission teeters on the brink of disaster. The price of failure will reverberate much deeper than the loss of the target - straight into the presidency itself.
Propulsive, compelling, and told with unparalleled realism, "The Callsign "brings readers new insight into the origins of the Taskforce as they execute the first Omega operation in a relentless and action-packed short story.

Enemy of Mine (#3): In retired Delta Force officer Brad Taylor’s third Pike Logan thriller, a tentative peace between Israel and Palestine has been brokered by the United States. But the Taskforce—a clandestine team operating outside of US law to protect the country from terrorism—gets wind of an assassination attempt on the American envoy sent to solidify the treaty. The Taskforce must devote every resource to saving his life—and preventing another bloody outbreak of violence.

Taskforce operator Pike Logan and his partner, Jennifer Cahill, are charged with following the assassin’s flimsy trail through the Middle East, a trail that becomes more muddled at every turn. They must contend with terrorist organizations, independent killers, and shaky allies to uncover the biggest threat of all: an American citizen hiding a secret that just may destroy everything, including the Taskforce.

Gut Instinct: A Taskforce Novel (#3.5): Fresh off of a brutal mission with the Taskforce—a top secret counter-terrorist unit that operates outside the bounds of U.S. law—Pike Logan and Jennifer Cahill are still dealing with its aftereffects. With his injuries on the mend, Pike is forced to let Jennifer take the lead when another Taskforce team asks for her help. But when her stint spying on two women suspected of involvement in a terrorist plot leads her in another direction, the team leader won’t take her seriously. Butting heads with him costs them credibility, but Jennifer won’t let it go. Determined to uncover the true target, Pike must trust Jennifer’s instincts more than ever. Being wrong means risking their reputations and future with the Taskforce, but being right means averting a threat that nobody else can see. A threat that may be bigger than they can handle.

The Widow's Strike (#4): Invented by nature but genetically manipulated by man, a mutation of a deadly virus has fallen into the wrong hands. Angered by sanctions placed against its nuclear program, a rogue state is determined to release it. Their chosen method: one of the Black Widows—female suicide terrorists of Chechen descent with a deadly reputation for slaughter that rivals any other group.

The only thing standing in the Black Widow’s way is the Taskforce, an extra-legal counterterrorism unit. Racing against time to prevent a global pandemic, Taskforce operator Pike Logan and his partner Jennifer Cahill follow the trail across Southeast Asia to the United States, only to learn that the enemy they face may not be the enemy they should fear.

Black Flag: A Taskforce Novel (#4.5): On leave after a particularly critical and dangerous mission with the Taskforce—a top secret counterterrorist unit that operates outside the bounds of US law—operators Knuckles and Brett have joined Pike Logan and Jennifer Cahill in Charleston, South Carolina. Their goal is to learn more about Grolier Recovery Services, the archaeological research agency that the Taskforce team uses as sophisticated cover for their work. But when Knuckles accepts a job to find missing treasure from the notorious pirate Edward Teach, better known as Blackbeard, the whole team is put to the test, because their new employers have a very different agenda, one that leaves members of the Taskforce at the mercy of real pirates determined to get their hands on a shipment of precious contraband at any cost.

The Polaris Protocol (#5): Retired Delta Force commander Brad Taylor returns with the fifth propulsive thriller in his New York Times bestselling Pike Logan series.

Taskforce operators Pike Logan and Jennifer Cahill are used to putting their lives at risk, but in The Polaris Protocol it’s Jennifer’s brother and countless more innocents who face unfathomable violence and bloodshed.

Pike and Jennifer are in Turkmenistan with the Taskforce—a top-secret antiterrorist unit that operates outside US law—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. The hack allows a user to send false GPS signals, making it possible to manipulate everything from traffic signals and banking wire transfers to cruise missiles, but only while the system’s loophole remains in place.

With the GPS hack about to be exploited and Jack’s life at stake, Jennifer and Pike must find a way to infiltrate the cartel’s inner circle and eliminate the impending threat. The price of failure, for both the Taskforce and the country, is higher than ever.