‘Captain America’ praises boy who saved sister from dog

Actor Chris Evans is paying tribute to a young boy who was seriously injured while saving his little sister from a dog attack.Evans sent a video message to 6-year-old Bridger Walker, heaping well-deserved praise on the boy.The Captain America star said he may play a super hero in movies, but Walker is a real life hero.The actor posted the video message on an Instagram page started by Walker's aunt.This is a video of Bridger watching the special message.Evans is also sending the boy an authentic