ERJ 175 {Ans: Embraer Regional Jet - 76 passengers, 12 first class and 64 economy plus/economy seats.}TSA {Ans: Transportation Security Administration}POC {Ans: Portable Oxygen Concentrator}Line Holder {Ans: A flight attendant whose schedule entitles him/her to hold a schedule built by the company.}Crew Resource Management {Ans: Effective utilization and communication with all resources to achieve safe, efficient flight operations.}Life Lines {Ans: Ropes used during water evacuations.}