Airlock Perspective...

A typical "drop airlock" for Zero-G areas. Upon finishing suiting up in the upper chamber, an astronaut drops into the lower chamber, and seals the door behind them. Once they do, and double check their suit and gear, they can begin the depressurization process, to unlock the outer door... Note: The system is designed so that only the inner or outer door can be opened at a time, unless the manual overrides are used, using the inner door's manual override will also seal off the hallway on either side of the airlock and it's associated ready room to prevent atmospheric loss in the station.