world war ii. the bomb is being dismantled at a plant in amarillo, texas. this is same plant where other old nukes are being taken apart in line with the president's plan to disman he will nuclear weapons. it is considered dismantled explosives inside all 300 pounds of them separated from the nuclear material known as the pit. i learned that today. the pit. jenna: we all learned that. we'll talk about the that and the pit and everything else. joe is author of bomb scare. first question, joe, how dangerous is dismantling a weapon like this. >> very dangerous. this particular type of weapon. this is the last of the megadeath weapons, a huge bomb, nine meg today tons. -- megatons. it has more explosive power than all of the missiles fired from one of our nuclear submarines today. the problem with this bomb it didn't have many of the