YUCCA FlLAT, Nevada, of the early 1950s is a diorama of modern America. Beneath desert stars a faux suburbia has been constructed, with ranch-style homes, utility poles, and pantries filled with canned food. Mannequins in floral dresses and mid-century suits tuck their plastic children into bed or sit before the silent televisions. Nearby, living soldiers crouch in a six-foot trench. Reporters assemble on pine benches dangerously close. An hour away, a woman in a revealing mushroom cloud costume is crowned Miss A-Bomb and an unknown musician named Elvis Presley, hoping for publicity, will soon perform as “the Nation’s only Atomic Powered Singer.” Guests carouse in glass lounges, drinking gin Atomic Cocktails. They’ll party until the bomb lights up the sky, and then they’ll kiss and dance and sing, drunk in…