This sound is from Fullmetal Alchemist Brotherhood Soundboard

Fullmetal Alchemist Brotherhood is a Japanese anime television series adapted from the original Fullmetal Alchemist manga series by Hiromu Arakawa. The series was first licensed in North America by Funimation and was broadcast English-dubbed on Adult Swim from February 2010 to September 2011.
See also: List of Fullmetal Alchemist: Brotherhood episodes, Fullmetal Alchemist (TV series), Fullmetal Alchemist, List of Fullmetal Alchemist episodes, Scar (Fullmetal Alchemist), and List of Fullmetal Alchemist characters.