Top 4 stories you need to know: Jan. 31

FOX 35's John Brown and Garrett Wymer break down four big stories to know on Friday, January 31 as recovery efforts continue following the midair collision between a passenger plane and a military helicopter, new details emerge about potential failings and another close call before the deadly crash, the stock market drops ahead of Trump's tariffs going into effect, and celebrations and reflections honor Jackie Robinson on his birthday.