I saw some comments about a "bomb shelter or tornado shelter" on the thread about the hunting ranch in Grayson County. I don't like tornadoes either, they scare the hell out of me...so, for those of you in north Texas, the North Central Texas Council of Government has a cost share program for tornado shelters or safe rooms (they rebate 50% of the cost). It can be underground, in a closet, under a stairway or freestanding in a garage. It's a somewhat long application process, you are put on a waiting list once approved but the list shrinks pretty damn fast once many applicants realizes this is a rebate and not an outright grant. We got on the list about 18 months ago and ours was installed this past Friday, 4' x 5' x7' tall, made from 3/16' A36 steel and powdercoated to match the gun safe in my master closet (which is where the shelter is installed). Plenty of room for my wife, two hound dogs and I and can double as a safe room, inward swinging door with two deadbolts and four 1 1/8" throw bolts, bolted to the concrete foundation with 24 anchor bolts.
Just throwing this out there for those that might be interested. I believe FEMA has a similar program.