How many letters does the top answer for “this movie contains the quote, i love the smell of napalm in the morning!” have?

The most common answer is apocalypse (10 letters).

Crossword clue: this movie contains the quote, i love the smell of napalm in the morning!

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

apocalypse 10 letters otdb

the last book of the New Testament; contains visionary descriptions of heaven and of conflicts between good and evil and

now 3 letters otdb

in the historical present; at this point in the narration of a series of past events