Which CSI character has a BA from Williams College?

The CSI character with a BA from Williams College is David Hodges.

David Hodges is a trace technician in the Las Vegas crime lab, portrayed by Wallace Langham. Before joining the Las Vegas team, he worked in the Los Angeles Police Department crime lab, where his superiors considered his attitude a problem. His academic background is part of the character’s presentation as highly educated and technically confident.

Hodges is known for his sharp observations, encyclopedic knowledge, and unusually strong sense of smell, which allows him to identify some chemical compounds by scent. He often tries to impress Gil Grissom and initially comes across as irritating or socially detached, but later develops close relationships with several colleagues.

The question can be confusing because Greg Sanders, Archie Johnson, and Henry Andrews also work in or around the CSI laboratory. However, the Williams College degree is specifically associated with David Hodges, not with those characters.