San Diego International Airport San Diego, California Wednesday, July 30, 2014; 10:21 AM   Giang Trang stood in a hallway of the San Diego airport through which passengers debarking from international flights would pass after they left the security area of the terminal.  The Asian teen was wearing a pair of khaki shorts and a red T-shirt with the seal of the city of Del Mar on the upper left side and the word "LIFEGUARD" across the back, along with a pair of sandals, allowing her to not look