Thanks to a group of current and former NFL players, 12-year-old Mikaila Ulmer's lemonade business is $810,000 richer. Former NFL running back Arian Foster, as well as Detroit Lions safety Glover Quin, Houston Texans' Duane Brown and Jonathan Grimes, NFL free agent Omar Bolden, Seattle Seahawks' Bobby Wagner, Detroit Lions' Darius Slay and Raiders' EJ Manuel