The infobox template in this article is missing some required data. You can help Nukapedia by filling it in.
Dallas was a scientist working on the Vault-Tec: Among the Stars project in Nuka-World, where people entering the exhibit would be tested on with various forms of radiation. Luis Bateman, the project lead, eventually started testing other scientists as well, including Dallas, J. Hodgson, C. Grunner, R. Langston, and Bartlebee.
This article is too short to provide more than rudimentary information about the subject. You can help Nukapedia by expanding it.