Mason McKay was last seen in Boulder City on February 16, 2025, when he exited an RTC bus at Blue Diamond Rd and South Durango at 9:15 pm. The bus camera showed him walking North on S. Durango. Mason may be in need of medical attention. He was last seen with a faded black High Sierra backpack and a navy-blue Patagonia ball cap and wearing a gray, long-sleeved shirt, dark blue sweatpants and black sneakers.