When Dr. David Shulkin was appointed secretary of veterans affairs in February, President Donald Trump charged him with the ambitious mission of reducing the veteran suicide rate to zero. Which means that for Shulkin to truly succeed in his role as the head of an agency that on numerous occasions in recent years has been accused of fatally neglecting patients in its care, the VA will need to ensure that not a single living person who has ever served in the U.S. military dies by suicide on his watch. That’s more than 20 million people.