Put it at the start of a sniper sequence, ahead of the reveal, then follow it with Enemy Spotted as the target appears and Inception Horn once the shot connects to close the moment.
このサウンドについて
This is the short opening theme from Meet the Sniper, a brief musical cue lasting just over two and a half seconds. It builds a calm, focused tension, like a marksman settling in before a shot, with a dry, understated confidence rather than a big dramatic swell. It comes from Valve's Meet the Sniper video for Team Fortress 2.