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The aging of plutonium pits is a big question mark. The potential power they yield is one of the most critical factors in triggering a nuclear explosion. But just as American voters are facing a “contest of the ancients” in this electoral year, so are scientists grappling with the vexing matter of plutonium’s lifespan.
The Missile Defense Agency had a busy year. From a change in top leadership to flight tests and high honors earned by employees, MDA continues to execute its mission of