Killing Machine: US defense budget blooms far from race frontline (VIDEO)

Barack Obama and Mitt Romney are throwing everything they've got into a last-ditch effort to woo voters in undecided states, in the closing days of the pre-election duel.

Promises of change and economic recovery are taking centre stage, in what's ironically the most expensive Presidential race in U.S. history.

But talk about any cuts to the massive defence spending is absent from the frontlines of the campaign - with both candidates expected to keep the mighty military machine rolling, as Marina Portnaya reports.