"Assault Breacher"

Reporting from Camp Pendleton - Weighing 70 tons, traveling up to 45 mph and possessed of a smash-mouth name, the Assault Breacher Vehicle is the Marine Corps' latest answer to a perennial problem of offensive warfare: how to push through the barriers and booby traps of an enemy's outer defenses.

Over the decades, Marines have used various strategies to breach defenses, involving heavy vehicles or, in some cases, sending Marine engineers into minefields to set, by hand, line charges loaded with explosives.

"Breaching is always the hardest part of an assault," said Sgt. Carl Hewett, a breacher operator stationed here.

In the 1990s, the U.S. Army decided it could not afford to continue developing such a complicated, maintenance-heavy vehicle. But the Marine Corps persisted -- funding the development and testing from its own discretionary budget funds.

In December, the 42-foot-long assault breacher was used in combat for the first time, as Marines pushed into a Taliban stronghold called Now Zad in Afghanistan's Helmand province. The brass were pleased with its performance.

Now, as the Marines plan a much larger and more complex assault in the same province, the vehicles, which cost $3.75 million each, are being touted as part of a strategy for routing Taliban fighters.