Surely the criminals wouldn't take their guns inside Yellowstone. There are signs saying they're not supposed to do that. All the Yellowstone campers are therefore safe, and need not worry.
Guns are allowed in Yellowstone.
As of February 22, 2010, a new federal law allows people who can legally possess firearms under applicable federal, state, and local laws, to legally possess firearms in this park.
The Credit Card Accountability Responsibility and Disclosure Act of 2009, was enacted May 22, 2009 and will become effective February 22, 2010. Section 512 of this law; Protecting Americans from Violent Crimes, supersedes the uniform treatment of firearm possession in the national park system outside Alaska under the regulations found at 36 C.F.R. 2.4.See here for more details.
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Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.
John Lubbock