(Las Vegas, NV) — A Las Vegas firefighter is showing off his tattooed muscles and pecs for a good cause. Twenty-six-year-old Chris Stiles will grace the October page for the “Nation’s Bravest: Firefighters Unite” calendar. It shows Stiles and eleven other shirtless heroes from around the country. Profits will go to each of the firefighters’ chosen charities. Stiles’ appearance will help the Southern Nevada Burn Foundation. The $20 calendar can be purchased at www.NationsBravest.com.