Based on Fabian's interest in traveling and seeing different places around the world, he should consider pursuing a career in National Security. This field often involves roles that can require travel, whether it's working with international relations, foreign policy, or global security issues.
Consequently, he might want to avoid a career in Regulation, which typically involves more localized or domestic work and might not offer as many opportunities for travel.
So, the best choice for Fabian would be to go into a career in National Security and avoid a career in Regulation.