To add, the reason why the B-52 was cleared first is because the weapons testing unit has one.
The B-2 that was dedicated to weapons testing, Spirit of New York, was retuned to the 509th after that other B-2 crashed on Guam, bringing the force back up to combat ready strength (yes, there are that few of them) So for something like MOPs all the preliminary testing is done on other platforms (like B-52s) while the B-2 only gets it when ready for platform-specific integration.
“To add, the reason why the B-52 was cleared first is because the weapons testing unit has one.”
And the B-52 has the size and thrust to carry the weapon.
Time for the grill out back. . .have a great 4th, all!