Careful, after the test the recruiter (based on your score) will try to guide you one way or the other. They have quotas to fill after all, and based on your score they might suggest signals intelligence, IT, or electrician. Take your time. You want to pick something that you want, but that also has openings and demand.
Border Patrol is hiring right now BTW. But if you apply and pass the tests, it will take a full 6-12 months to get back a job offer.
https://www.usajobs.gov/GetJob/ViewDetails/475327900