First thing you should do is contact the ROTC detachment at UNLV. The second thing you could do is contact a recruiter and ask about OTS/UPT. Keep in mind it's very possible the recruiter may lie to you. Another thing you can do is contact local guard and reserve units. I know that Reno has hercs, but not sure about the rest of Nevada. If you elect to contact your local ROTC unit, be sure to be humble and respectful. If you join the unit, the guy you talked to is liable to be the guy that decides your future. You don't want to come across as arrogant, condescending, or entitled. Not that you would, of course, just throwing that out there. Good luck.