The US Army this month introduced its first new lethal hand grenade since the Vietnam War, a plastic weapon that uses shock waves rather than shrapnel to kill enemies.
World War II concluded decades ago, but live mines lurking on the ocean floor still pose threats, potentially spewing unexpected geysers or releasing contaminants into the water. Experts conduct ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results