The head of America's largest railway union has sounded the alarm, cautioning that the impending merger between Union Pacific and Norfolk Southern Railway could precipitate a "collapse" of the nation's transportation system unless labor demands are adequately addressed. Announced last week, this monumental deal is poised to become the largest merger in railway history, aiming to forge the first east-west freight railway operator in the United States by seamlessly integrating Union Pacific's western rail network with Norfolk Southern's extensive eastern coverage.