A football helmet&#x27;s health warning sticker is pictured between a U.S. flag and the number 55, in memory of former student and NFL player Junior Seau, as the Oceanside Pirates high school football team prepares for their Friday night game in Oceanside, California in this September 14, 2012 file photograph. Former San Diego Chargers player Seau committed suicide last year after what some believe were years of depression stemming from multiple concussions he suffered as a player.