Nevada highway patrol trooper Joshua Newell always wanted to be a police officer. After serving a four-year commitment as a military policeman in Iraq and Afghanistan, he trades the Middle Eastern deserts for his hometown, Las Vegas in the Mojave Desert. Except marathon training, which is the result of a lost bet, everything is going according to plan.

That is, until he becomes drawn into a terrorist plot that the FBI is tracking. A vengeful mastermind has planted twelve RVs loaded with explosives all over the country's national parks, and there isn't much clock left before they...