My dad recommended the same thing for the house. Something to consider as my wife has not shot very much. I do want something to play with at the range and cc in the future (not sure if I will be in MD long enough to jump through the hoops). I have been looking at the SR9C and a few SIGs.
To be honest, if I get what I want first and the wife doesn't like it then I can always get something else. If I get something she really likes to begin with I might back myself into a corner for awhile.
Can't go wrong with a Sig. I go out of my way to help others especially military/LEO folks.
You should repost your question in the other forums, Central Maryland would be most appropriate, considering this broad question for now.
Ft Meade. As for buying, it is my understanding that I do not need to obtain an HQL so that will be nice.
Correct. As active duty (or retired) military you do not need an HQL. Also, if you decide to purchase/order this gun; it's non-regulated so you don't need to wait the seven days required for regulated firearms (pistols and some 'military looking' rifles).
I highly recommend you attend some local civilian training. The most important thing is mind-set* or what many call 'awareness', then there is the critical issue of marksmanship (I call it 'shot placement'). Beyond that there are a lot of other things to consider and exercise.
Check out Annapolis Defense and Security (ADS) and Dukes Defense training classes. Both are exceptional and will give you the certifications/licenses you need to be legal; and the training/experience to increase your chances of surviving a lethal confrontation.
*be a law-abiding & responsible citizen, help others and do the right thing.