The U.S. has about 23,000 pits , of which about 10,000 are in weapons .
Roughly 15,000 are in storage at the Pantex Plant near Amarillo , Texas .
The U.S. has about 23,000 pits , of which about 10,000 are in weapons and roughly 15,000 are in storage at the Pantex Plant near Amarillo , Texas .