One of the most successful duos in country music history, Montgomery Gentry, has been nominated in the "Top Vocal Duo" category for Sunday night's "Academy of Country Music Awards." Over the past decade, they've released more than 20 chart-topping singles. Add to that list their new single, "Where I Come From," off their new CD, "Rebels on the Run." It's already in the top 10. They performed "Where I Come From" in the Second Cup Cafe on "CBS This Morning: Saturday."