Black passenger silhouettes against apron window, international airport

Black passenger silhouettes against apron window, international airport. Camera focused and exposure set for outdoors, view of inner ramp and apron view, airplane parked for flight preparation. Chek Lap Kok, Hong Kong International Airport sterile concourse interior on foreground, people stand in queue for boarding, waiting gate to open and loading begin. Someone passing, people move and communicate, while waiting in line. Chinese and asian passengers, adults man and women mixed group.