Colorado Kill-Zone

The Mafia has turned paramilitary, and its target is the Executioner

A twenty-seven-foot motor home cruises out of Denver and onto a barren Colorado highway. This is no ordinary RV—it is a warwagon, a high-tech mobile death machine, and with Mack Bolan at its wheel it is the deadliest weapon on earth. The Executioner has won many battles in his one-man war against the Mafia, but in the frozen wastes of Colorado, he will face his most dangerous mission of all.
 
Led by a hardened veteran who’s as much of a tactical genius as Bolan, the kingpins of organized crime have put together a paramilitary outfit whose sole goal is to execute the Executioner. Colorado is a long way from Vietnam, but Bolan is about to find himself right back in the killing fields.

Colorado Kill-Zone is the 25th book in the Executioner series, but you may enjoy reading the series in any order.