One question that worries many visitors to defensivecarry.com, a website devoted to the delights and pitfalls of life with a hidden gun, is whether their "concealed-carry" permits will be valid outside the state in which they are issued. Can they take their guns on holiday with them? Can they pack them in their checked bags for a flight? What if their plane is diverted to a spot like New York, which makes it exceedingly difficult to carry a gun? And if they cannot bring... (GunPolicy.org)