answer:In the late fifties/early sixties, we had air raid drills. (Just in case some rogue Commie decided to bomb us…in Ohio!) We would line up in the hallways facing the lockers, with our hands clasped behind our heads. There were more kids than lockers, so they made a second line of kids leaning against the first line who were against the lockers. Maybe you can imagine the giggling going on amongst the grade school kids, as the teachers tried in vain to maintain silence! Your question is the first I’ve heard of code red drills; I say it’s a sign of the times.