To elaborate the different acronyms the military so colorfully uses/used.
SNAFU: Situatin Normal All Fucked Up.
: Things Are Really Fucked Up.
: Fucked Up Beyond All Recognition.
"We ran into a SNAFU." The slang does not use it properly, but rather modifies the acronym that is used so much into more of a word. SNAFU actually becomes a predicate.