![John Tierney](https://armscontrolcenter.org/wp-content/uploads/2018/04/DSC_4620-201x300.jpg)
John Tierney
Executive Director
![](https://armscontrolcenter.org/wp-content/uploads/2022/01/John-E-photo-215x300.jpeg)
John Erath
Senior Policy Director
Cain Farmer
Controller
![](https://armscontrolcenter.org/wp-content/uploads/2021/04/DSC0252-200x300.jpg)
Samuel Hickey
Castleman Fellow
![](https://armscontrolcenter.org/wp-content/uploads/2023/11/Tolu-Headshot-e1701285103470-224x300.png)
Tolu Ilori
Congressional Outreach Coordinator
![John Isaacs](https://armscontrolcenter.org/wp-content/uploads/2018/04/DSC_4598-e1523387710914-201x300.jpg)
John Isaacs
Senior Fellow
![](https://armscontrolcenter.org/wp-content/uploads/2024/07/Kirchner-Barney-Headshot-225x300.jpg)
Sarah Kirchner-Barney
Summer Intern
![photo of Connor Murray](https://armscontrolcenter.org/wp-content/uploads/2023/10/Connor-Cropped-e1698340673712.png)
Connor Murray
Research Analyst
![Emma Sandifer](https://armscontrolcenter.org/wp-content/uploads/2023/10/Emma-Cropped-Headshot-2.png)
Emma Sandifer
Program Coordinator
![Anna Schumann](https://armscontrolcenter.org/wp-content/uploads/2020/01/yourphoto-200x300.jpg)
Anna Schumann
Communications Director