WH57: Nope.
But, now that you say it...
It is a reference to the rare occasion that the MIL has 3 B-52 aloft at one time in the same general location.
Most rare is triple B-1, which I have never seen but heard of.
I have recorded 2 B-52 and a single B-1 aloft but that is not as rare as the triple B-52 of today.
There are occasions of B-52 out Of Louisiana and Minot, ND (separate locations) that I have recorded also.
thanks, appreciate it!