A Day's Rest
As the world-renowned number-one superhero of America, Jack S. Michael (also known by his superhero name, Star Spangled), made it his routine duty to fly all around America to get a bird's eye view of the entire country. With this, he could monitor brewing trouble and deal with it.
Most of the time, he would inform the local superheroes to deal with their local troubles, and if the situation couldn't be handled by the local superheroes, he would inform the Top Ten and then it's up to them to decide who would handle the case.
Furthermore, if the top ten superheroes of America couldn't handle it, then that's when Star Spangled would move by himself, working with either the top ten or the local superheroes to bring the situation under control.