Boat with fireworks, ammunition explodes in California | West Coast Wrap

Tonight -- immigration is one of the most important issues for voters across the country and that's especially true in the border state of Arizona where a controversial immigration measure is on the ballot this election. Coming up -- how that measure could affect the election and what voters in the battleground state want to hear from the presidential candidates. Plus -- geologists in Hawaii taking advantage of an ongoing volcanic eruption. How they're carefully collecting lava samples and what they're hoping to learn.