The folks at Bristol Motor Speedway hire the Outcast crew to customize an RV into the ultimate race fan experience; tensions are once again high as Kelvin commits to an ambitious deadline, infuriating the guys in the shop.

With 7.5 tons of steel salvaged from the Twin Towers forming her bow, USS New York is tribute to those who perished on 9/11; she was also built to launch up to 800 Marines and their fierce battle hardware ashore with speed and versatility.

RATED 14+. After a small commuter plane crashes moments after take-off, investigators comb through the wreckage and uncover a string of errors and faulty assumptions that have been putting millions of passengers at risk for years.

RATED 14+. While on a hiking trip in Zimbabwe's Chizarira National Park, elephants attack two friends, leaving one bleeding out while the other struggles to find safety; a 12-year-old encounters an alligator while swimming in a Louisiana pond.

The drilling rig Leiv Eirikkson faces the challenge of navigating one of the world's busiest shipping lanes and squeezing under two suspension bridges; 330 Squadron medivac a man with serious heart problems and his heart stops during the rescue.