1) Controlled 2) Like airplane cabins 3) Pressurised 1) Controlled 2) Pressurised 3) Under the gun 
Containing air or other gas at a pressure higher than the pressure outside the chamber.
[adj] - maintained at a certain atmospheric pressure
pressurised adjective maintained at a certain atmospheric pressure; `in a pressurized cabin the air pressure is comfortable for breathing`; `cooking with pressurized steam`
brought to and maintained at an atmospheric pressure higher than that of the surroundings: cooking with pressurized steam. · maintained at an air pressure comfortable for breathing: a pressurized cabin and cockpit; a pressurized suit for diving. · subject or subjected to undue pressure or harassment: the pressurized milieu of big busines...