When four-year-old Tyler Stallings watched a video about veterans living on the streets, he knew that he had to do something to help. At first, he asked his mom if they could build them homes. She told him that unfortunately that wasn't possible, but that they would find another way to help. So they went to the store, loaded up on clothes and toiletries, and headed to local shelters. Four years later, Tyler has now helped thousands of veterans—and he's just getting started.