@thirtyfutsmurf
Not sure where you are from or experiences with the DC area, but any inclement weather that leads to schools/the government being closed for the day = at least 2 days added on to ANYTHING that needs to get done. I've been following Georgetown's twitter all throughout the application process and I know their offices have been closed a handful of times. 1-2 inches of snow around here causes shutdowns. Granted, GWU had the same issues and got all of their decisions out ~2 weeks ago, so excuses shouldn't need to be made...but that has never stopped anyone from making them. I'm sure they also get the most applications in this area because of the weight the program carries. Who knows.
I think you ask a good question in your second thought. That's on you, is all I can really say. Think about the options you want to give yourself later on in your life/career. My GUESS would be if you want to get into a job that is specifically security based when you're done/while you're in school, a MA in security studies may be the best direction. However, if you think that while you're studying you can look for jobs in the security field that match your education (MPA/MIA/MPP) then you could/should be fine. Depends on what you want to be studying, what you want to do, and how much effort you put into finding a position/career you'll enjoy. Hope that helps.