[Tijeras_Slim]

Seeing as how the last underground test was in 1992, I think the folks involved would have hoped to live longer.

[vmivol00]

http://blog.heritage.org/2012/04/26/u-s-nuclear-warheads-face-more-uncertainty-as-scientists-retire/

“In about five years, the United States will not have a single active engineer with actual nuclear weapons testing experience, defined as “a key hand in the design of a warhead that’s in the existing stockpile and who was responsible for that particular design when it was tested back in the early 1990s,” according to Thomas D’Agostino, the Administrator of the National Nuclear Security Administration.”