[least]

MEPS stands for "Military Entrance Processing Station" and it's where you go to do a bunch of checks to see if you're fit to serve. It's also often where things like the ASVAB (Armed Service Vocational Aptitude Battery) and DLAB (Defense Language Aptitude Battery), basically aptitude tests are held.

It's where you do testing, select your contract, swear in, leave for basic combat training or boot camp, and also do physical examinations, including some kind of odd ones, like duck walking across a room in your underwear with a bunch of other men.