On Dec. 20, the 4th Annual Interagency STEM Volunteer Fair will start from 11 a.m. to 2 p.m. in the cafeteria at the Department of Energy, 1000 Independence Ave., SW, with the aim to connect federal employees to STEM organizations and government agencies looking for volunteers to help the community during the holiday season. The event is free. Attendees will get the opportunity to meet STEM organizations, government agencies and schools in the D.C., Maryland, and Virginia areas that need help. For more information, contact AnneMarie Horowitz at annemarie.horowitz@hq.doe.gov.