The six major professional athlete unions in the U.S. are teaming up for a mental health awareness campaign. It's to mark May's Mental Health Awareness Month. The initiative involving the unions representing MLB, MLS, NHL, NBA, NFL and WNBA players will look to normalize mental health, including among athletes. In a joint statement, the unions said they "have come together for the first time in collaboration to recognize the importance of our players' mental health and wellness."