Air Raid This Is Not A Drill -
Interesting historical summaries like those from the Oregon History Project describe how air raid drills became a ritual for American schoolchildren, complete with metal identification tags and "walls of death" (the large windows in classrooms that would shatter in a blast). 'This is Not a Drill' Dispatch - DocsTeach
Depending on your interests, there are several fascinating "papers" or documents related to this event, ranging from original historical artifacts to modern academic analyses. 1. The Historical "Paper": The Original Radiogram Air Raid This is Not A Drill
The "No Drill" mentality eventually evolved into the Cold War's civil defense efforts. Interesting historical summaries like those from the Oregon