tracer bullet

The actors could watch “tracer bullets” whiz past and see explosions in midair and the eyelines would all be correct.

One of the workers saw tracer bullets fired across the night sky from the roof of one of the plant's buildings, probably at a drone.

Every tracer bullet I saw was hitting something.

The most worrying moments, he said, included firefights when he could see tracer bullets overhead, and a when a jet buzzed the town just a few hundred feet overhead.

The women watching from the ground saw the gleaming red bursts of tracer bullets across the dark sky.