My questions should probably go into a few of the different forums, but in reality they're all related so I felt this may be the best place to ask them. I'm a former Marine who lives in Florida. I haven't owned any firearms since I was a kid and had a shotgun, .22 rifle and a .22 pistol. I'm considering buying an AR-15 or similar as well as either one or two pistols for my wife and I. The rifle is primarily because I'm starting to have concerns about the long term security of our country. Maybe because of our politicians and/or the shifts of power around the world. Our military is too small and not as well trained for close combat. The pistol(s) are as a backup for the rifle and for personal security and property protection in case of a devistating hurricane. Our house has been hit by 3 of them and I expect things to get worst. Also, we're boaters and may be in some remote locations. We went to a gun show over the weekend and I was amazed by the options in AR-15s and similar style weapons. My plan was to get an AR-15 because of my familiarity with it and I was originally thinking of a Colt .45 for the same reason even though it would be heavy for my wife. In speaking with one of the dealers, he pointed out that a revolver with a laser sight would be better because in my situation, the weapon may not be cleaned as much as it should and a revolver is less likely to jam. I think that's a good arguement but my wife is 'woman sized' and I'm afraind that if she had to use it, she would be lucky to get one semi-accurate shot in. I like the idea of a semi-automatic at close range because subsiquent shots would more likely go up-or-down. My recollection with a revolver is that you get some twist. I also don't like too small of caliber. I don't like the thought of shooting someone but If I have to, then I want the person to be in pieces. Bullets are cheaper than lawyers. I'm not a weapons enthusiast so (I hope) they will only be used once or twice a year at a range. I'm open for all kinds of advice and opinions. What types of weapons should I look at and why? How long will ammo last in humid Florida? Considering my purpose for the rifle, I would want to keep a lot of ammo, but I may need to have it for 10 or 20 years. Any advice or direction would be appreciated. Thanks.