https://www.answers.com/military-history/Where_were_air_raid_drills_used_in_the_1950%27s_in_the_US
Where were air raid drills used in the 1950's in the US? - Answers
In the 1950s, air raid drills were commonly conducted in schools, government buildings, and military installations across the United States as a response to...
air raid drills
https://www.newindianexpress.com/cities/bengaluru/2026/Apr/28/mock-blackout-air-raid-drills-in-bengaluru-on-april-28-public-invited
Mock blackout, air raid drills in Bengaluru on April 28, public invited
The Ministry of Home Affairs stated that there is no cause for panic, emphasising that the exercise is part of routine preparedness efforts.
air raid drills
https://www.mass.gov/executive-orders/no-10-1st-series-practice-blackouts-and-air-raid-drills
No. 10: (1st Series) Practice blackouts and air raid drills | Mass.gov
air raid drillsno 101st series