1993, Ft. Sill, Oklahoma.
We crawled down one lane, came over, and then crawled up onto a firing M-60 firing 1 in 5 tracer mix. The shots were going about 3' over our heads. Just so long as everyone is doing like they are supposed to, then what's the problem?
Having been someone who actually fired those M60s, I can tell you that it was from an elevated position and the rounds were actually closer to 20ft above your head. The illusion of rounds being closer than they really were was courtesey of a combination of darkness, smoke, noise, stress, fatigue, and shouting Drill Sgts.