Rachel Staley Grant is currently on an assignment to the U.S. Department of Health and Human Services. Until her departure in January 2024, she served as deputy vice president on the Communications team.

Robert E. Berls, Jr. has a deep background in Soviet/Russian energy and nuclear weapons issues. During the first Clinton Administration, he was special assistant for Russia/NIS Programs to the secretary of energy.

Ambassador Riaz Mohammad Khan is a former Foreign Secretary of Pakistan and former Ambassador to China, the European Union, Belgium and Luxembourg and to Kazakhstan and Kyrgyzstan.

Jill Hruby was NTI’s inaugural Sam Nunn Distinguished Fellow, completing her year-long term in November 2019. Before joining NTI, she served as the director of Sandia National Laboratories from July 2015 through May 2017. Sandia is a Department of Energy/National Nuclear Security Administration national laboratory with diverse national security missions that include nuclear weapons, cyberspace, energy, non-proliferation, biological defense, and space.

Mackenzie Cater joined NTI in 2019 as the executive assistant to the Vice President of Materials Risk Management and Chief Financial Officer.

Laura Turner Seydel works with and supports organizations that address urgent challenges affecting the health, functionality and vitality of our life support system: our air, water, land, food, biodiversity and climate. She serves on the board of Project Drawdown which focuses on measuring the top scalable solutions to address global warming. Laura also works to address the extinction crisis as a Patron of Nature for the International Union of the Conservation of Nature.

Kimberly (Kimmie) Ross joined NTI in 2020 and serves as development associate.

A founding NTI staff member, Joan Rohlfing became president and chief operating officer of the Nuclear Threat Initiative in January 2010, after nine years as NTI's senior vice president for programs and operations.