The term 'CANCEL AT NASA' can be summarized as the job of a SCRUB, which is a five-letter word. A SCRUB is a person who works in the aerospace industry and is responsible for canceling or scrubbing a mission if it is deemed unsafe or not feasible. This could include canceling a launch due to weather conditions, technical issues, or other safety concerns. The SCRUB is also responsible for ensuring that all safety protocols are followed and that the mission is conducted safely.