Why the [A][A][A]?
re Why AAA?;
Dunno. Because A is the beginning or start?
Noticed that too, did ya?
My old brain (that has been bingeing on WWII videos, lately) keeps coming up with the then-common term of "Ack-Ack" (for "AAA" -- Anti-Aircraft Artillery)...
But, I know that ain't it... :-{
TXnMA