We had the pop up targets at Ft. Jackson in the summer of '74... I liked them...
I also remember on the "night fire course" (where we were indoctrinated to learning the three round burst on Full Auto of our M-16),,, all squads of our Platoon was to advanced in line under flares... When they popped up (in our line of fire) we were to shoot 'em..... Yes sir, I also remember our Drill Sgt. telling us, "if anyone gets a'head of the advancing line the only soul we'd see when looking in a mirror would be the soul of his boot stuck so far up our ass!!! And you know what, we believed him!!!
The night fire course did not count towards our qualification score - it was merely for combat training to familiarize us with such things that we might find ourselves involved in.