Also, it's crazy I got the job at one office, but then almost all the other office locations (doing the same job) didn't even interview me. Fed gov is weird I guess. Or maybe I'm just a stupidly lucky son of a bitch to have gotten this job.
Remember that different offices have different people hiring and people are, well, different.
Someone from office A might find your resume boring, while someone from office B might see something they love about you. Also, it depends on the pool of applicants each individual office gets-you might be a big fish in one pool but not others.
Finally, no matter all of this, I'm sure luck played a role too.