S1·E9 Begone with the Wind

Chaos breaks out in the hospital during a hurricane – the kitchen's flooded, the phones are out, and the roads are closed. So when Rose Nyland shows up to help, she's immediately stuck with Julie and the duo are assigned to gathering food from the patients – food that they later give to Laverne for the pediatrics ward. When the news arrives that the roof collapses in a burning building, Annie fears that her husband, a fireman, may have been killed. Sandy runs into a man with a broken leg, whom she dumped. Hank and Gina get trapped in an elevator and share a romantic moment. Two rival gangs start a knife-fight in front of the nurses' station (and threaten Rose) so it's Paco to the rescue.