Mackenzie Nichols Staff Writer“Captain America” actor Chris Evans praised a 6-year-old boy named Bridger Walker, who saved his younger sister from a dog attack, as a hero — and plans to send him an authentic Captain America shield for his brave actions.“I’m sure you’ve heard this a lot over the last couple of the days, but let me be the next one to tell you: Pal, you’re a hero,” Evans said. “What you did was so brave, so selfless, your sister is so lucky to have you as a big brother.
