IN THIS ISSUE

Letters

• Communicating what we do
  Clear science has value—and national security implications

Abstracts

• The question: What attracted you to Los Alamos?
  This question was part of a 75th anniversary panel that focused on women's contributions to the Laboratory mission.
• 5 Under 35
  Weapons Programs isn't just for baby boomers.
• Manhattan Project legend turns 100
  John Tucker celebrates a century.
• Generally speaking
  Two of the most senior U.S. generals visited Los Alamos to speak to employees about how the Laboratory's work is essential to America's national security.
• Future military leaders spend a summer at the Lab
  Service academy students work alongside scientists and engineers to help solve national security challenges.
• Developing the Annual Assessment
  Though penned in the director's office, the annual weapons assessment letter is the result of an entire Laboratory workforce.

Features

• Salt Life
  Ohio-class submarines disappear into the ocean for 70 days at a time, carrying 155 sailors, 24 nuclear-armed missiles, and more hot sauce than your local taqueria.
• SSBNs of the future
  The 2018 Nuclear Posture Review outlines a path forward for America's sea-based deterrent.
• A day at DARHT
  To evaluate how a B61 gravity bomb might perform at high temperatures, scientists use DARHT, the world's fastest X-ray machine, to take radiographs of a mock-nuclear weapon implosion.
• Jane Hall: Queen of the Hill
  The Laboratory's first female assistant director brought smarts, style, and a steady hand to Los Alamos.
• Cultivating Clementine
  The world's first fast reactor had a short but significant life at Los Alamos.

Analysis

• The biggest national security challenges of the future
  Six Lab directors share insights at a panel discussion.

Being Essential

• Master of the loom
  Mechanical engineer Donald Sandoval designs nuclear weapons. At home, we weaves tapestries—and thinks about nuclear weapon design.