Place it right at the frame of discovery in a stealth or fail edit, before any reaction line. Follow it with the Cartoon Run Take Off sound button when the character bolts, or end the sequence there for a freeze-frame cut.
关于此声音
This is the short alert sting from Metal Gear, a sharp electronic chirp that plays in the games when a guard spots the player and an exclamation mark pops overhead. At about a second and a half it lands instantly, giving listeners a jolt of caught-in-the-act tension that quickly turns comic.