A U.S. Army armored vehicle swallowed by a Lithuanian bog with four American soldiers on board was pulled free Monday after a major five-day international recovery operation, authorities in Vilnius ...

The soldiers went missing after their armored vehicle became submerged in a peat bog during a training exercise.

The BlueWhale drones fall into the category of large unmanned underwater vehicles, weighing in at 5.5 tons, with a length of almost 11 meters and a diameter of over 1 meter. German naval-systems ...