Escape Velocity - The Pax Series (Universe 1331), #2

Picking up where PaxCorpus left us, Escape Velocity shoves you face-first into the abyss, grabs hold and never lets go. Follow Dante, Meryl and a ragtag squad of survivalists, who call themselves, Belligerent Underpaid Tactical Team, from the depths of the devastated state of New Jersey to the bowels of post-apocalyptic Manhattan. With less than a day's worth of supplies and their underground shelter lying in ruins, thanks to the terrorist cell, ZeroFactor, there is only one course-of-action--fight tooth and nail, bullet-by-bullet, to the enemy stronghold and Rift of Manhattan--or die trying.
The insanity doesn't stop there. Cybernetically modified, former Harrisburg, Pennsylvanian cop, Dante Marcellus, has a new problem. An implant inside of his head, where a bullet had once been, acts as a telepathic network between him and the thought-to-be-dead, Nuhm De'Ara. Leaving a trail of bodies all the way to New York City, survival is less-than-certain, as their enemy clamps down with violent determination.
And when there isn't even a glimmer of hope left for who remains, a man once known as Jack Marcellus returns--with vengeance and anger fueled hatred for the only person who could possibly save him from himself. This time, there will only be one man left standing. There are things much worse than the bite of a deader and the undead plague.