Gillette, Wyoming is a place where “the high school yearbook devoted four pages to ‘Hunting: No Greater Sport,'” a local club funds “college scholarships by raffling off AR-15s,” and popular slogans include, “Welcome to Wyoming: Consider Everyone Armed.” Mariah Engdahl, age 16 — a girl surrounded by gun enthusiasts in her family and in her boom-and-bust community — educated herself on gun laws in Wyoming and, as a one-teen protest on gun control, delivered a speech to the Campbell County school board in a bid to avoid arming teachers in her county’s schools.