While a shooting victim is brought to the hospital, a Rottweiler gets loose in the ER; a young mother's asthma attack turns quickly into a deadly heart failure; a comatose man comes into the ER with a suspicious rash.While a shooting victim is brought to the hospital, a Rottweiler gets loose in the ER; a young mother's asthma attack turns quickly into a deadly heart failure; a comatose man comes into the ER with a suspicious rash.