Re firearms & RV's:
This subject has been so distorted over the years by "Anti-gun" individuals including much of the political discussions that it is dificult to get the truth out.
I am lifetime cattle rancher (two ranches) plus I have been a 41 year career LEO (Sheriff and Chief of Police).
First, each state seems to have various gun laws. I suggest that anyone considering possesion of a gun while traveling should get a copy of the State's Gun Laws, available from the National Rifle Association.
Second, Do not believe much of the "propaganda" commonly read and heard about gun possesion. Law abiding citizens possess a gun for the same reason that we buy and have insurance against any other hazzard. As has been stated above, it is better to have a gun and not need it than need it and not have it. Remember that Gun Owners use their weapon in the United States over 1 million times each year to prevent a deadly crime (Reference Research by Prof John Lott, University of Chicago, and the Annual Uniform Crime Reports published by the U.S. Department of Justice.)
Third, be sure to understand the laws, receive training, have a mind set about self defense if you intend to have a gun with you. Use common sense the same as you would if you were to have a chain saw, power drill, power lawn mower, fire extinguisher, an RV or any other device or tool.
Fourth, if you do not want a tool for an emergency defense, then do not have one. It is your choice.
Fifth, it is false to assume that anyplace, RV Parks, home, public or private areas, is safe just because it should be. Remember that states, counties and cities that permit, and even encourage gun ownership, have the lowest violent crime rates. The areas with the highest crime rates in the U.S. are those areas with the most restrictive gun laws. (Verify this from the Annual Uniform Crime Reports cited above.)
Sixth, remember that most often just the possession and ability to use a gun to prevent a crime is often all that is needed, without firing a shot. Remember, a gun in the hand when seconds count is more effective than a 911 phone call to get the police in 5 or 10 minutes.