of course, the "uss fitzgerald" had a complete deck crew, the communication center was up and running, observers, so they would have known that the vessel was out there, but they could not have foreseen the collision. that's what we have to find out, what happened in those very few moments before those ships collided to bring them close together. >> lieutenant colonel rick francona, thank you so much for your insight. another story we're following in central portugal, at least 43 people have been killed in a wildfire there. >> many of them died in their cars trying to get away. the fire spread fast after reaching a small town north of lisbon saturday. >> so nearby villages are completely vouned by this fire and the government says it doesn't have enough firefighters to fight it. >> let's go to our meteorologist derek van dam. a serious, serious story, derek.