@CNN: Sleep apnea led to two commuter railroad accidents within 13 weeks of one another, the National Transport Safety Board says https://t.co/lWEXxqpeWg https://t.co/2Y1jbwcNH0

@CNN: Sleep apnea led to two commuter railroad accidents within 13 weeks of one another, the National Transport Safety Board says https://t.co/lWEXxqpeWg https://t.co/2Y1jbwcNH0