Thanks for posting. Very interesting. Also interesting that after an event of that magnitude, they make the announcement, and then “we now go back to our regularly scheduled program”.
They did that quite often because the programs the networks aired were on behalf of sponsors who were guaranteed their programs would air with little or no interruption in contracts between the sponsors and the networks.
Most of the special news broadcasts the radio networks aired on December 7, 1941 were in time slots where sponsored programs were not airing.
In some cases sponsors agreed to cut back or cancel their programs.
What? No Play-Doh, milk, cookies, and blankies?