I lived in Ft. Pierce, Florida at that time, which is about 325 miles north of Havana, which was just a easy lob for a missile back then.
We used to practice the duck-under-your-desk-and-kiss-you-a$$-goodbye move too. And that's what we all thought of it as ...
We didn't care how stupid the teachers were, *WE* *KNEW* that ducking under the desk was not going to do any good. Heck, we figured we might as well 'hit the beach' 'cause the surf would surely be *up*!
Surf's up!