Nah, it was the USMCR. The closet to live rounds coming at me was working the targets on the rifle range at P.I. Whether it was a hit or a complete miss there was a distinct snapping sound as the round passed overhead; breaking the sound barrier, I guess. M-14, 7.62mm full metal jacket. Live night firing one weekend up at an army camp in WI. Every third round in the magazines was a tracer. Fast as it went you could follow the track, adjust your aim.