
Titanic: The Final Secret,NRV Alliance in the Black Sea, summer 2007. An underwater archaeological team is aboard searching for Roman-era shipwrecks on the sea floor.

Titanic: The Final Secret,Research support vessel Flamingo pulled up alongside the NRV Alliance in the Black Sea.

Titanic: The Final Secret,Starboard side of NRV Alliance in the Black Sea, summer 2007. An underwater archaeological team is aboard searching for Roman-era shipwrecks on the sea floor.

Titanic: The Final Secret,In a reenactment, a radioman aboard the submarine rescue vessel Skylark receives the last messages from the doomed submarine U.S.S. Thresher in 1963. The Liberty Ship John Brown stands in for the Skylark.

Titanic: The Final Secret,View facing bow of NATO Research Vessel (NRV) Alliance in the Black Sea, summer 2007. An underwater archaeological team is aboard searching for Roman-era shipwrecks on the sea floor.

Titanic: The Final Secret,An NRV Alliance zodiac returns to its ship after delivering the crew to their boat.

Titanic: The Final Secret,A mate from the NRV Alliance prepares to lower a zodiac.

Titanic: The Final Secret,Reenactment of Admiral N. Ron Thunman (Eric Carlson) and Commander Robert Ballard (Richard Isaacs) viewing slides of the U.S.S. Scorpion and U.S.S. Thresher in a set of the Admiral's office circa 1983.

Titanic: The Final Secret,NRV Alliance's Captain Michael Peth at the Bridge in the Black Sea.

Titanic: The Final Secret,National Geographic Explorer-in-Residence Dr. Robert Ballard on board the Flamingo in the Black Sea, returning to Sevastopol, Ukraine. The NRV Alliance is in the background.