Examples of Cryogenic Life Support Apparatus

Liquid air pack being used by launch pad rescue team to load simulated patient into M-113, armored personnel carrier. Liquid Air Self-Contained Breathing Apparatus: 1 hour
Propellant Handler's Ensemble being worn by Shuttle Solid Rocket Booster technicians.
Supercritical self contained breathing apparatus with liquid cooling garment.
Supercritical underwater breathing apparatus under test.