Despite all the years, and all the troubles, Darren Cox still likes to put on his bee suit. A big, block-shaped man in his 50s, Cox sports a bowlish blond haircut and serious demeanor. But when he slips into his protective gear, his netted hat in hand, he offers a rare smile. “Time to get out there,” he says. It’s a summer day in Cache Valley, an agricultural center set among the mountains of northern Utah. The skyline, composed of peaks popping with shimmering green, spea…