An EXIGENT CIRCUMSTANCE - Emergency condition. Those circumstances that would cause a reasonable person to believe that prompt action was necessary to prevent some unwanted consequence. For further discussion - see link below.
Emergency
in-place protection
"Verb" is a word that denotes an action, occurrence, or state of existence.
Immediate Action - book - was created in 1995.
Immediate Action - book - has 507 pages.
A complaint asks for immediate action.
Sudden or unexpected appearance; an unforeseen occurrence; a sudden occasion., An unforeseen occurrence or combination of circumstances which calls for immediate action or remedy; pressing necessity; exigency.
Suddenly is an adverb. It describes how an action is done.
No, "suddenly" is an adverb, not a verb. It is used to describe how an action takes place.
No, but you can make a sentence with the word suddenly. Suddenly it started to rain.
Perform immediate decon.
Perform immediate decon.