Try a GBU-57 weighing in at 30,000 pounds....x2 per B-2 Bomber such as those forward deployed to Diego Garcia for no announced reason. Now that the live fire test on the Houthis went well.
https://maritime-executive.com/artic...-busting-bombs
https://fas.org/publication/half-of-...-diego-garcia/
The original concept of dropping very large bombs by parachute using C-130's began during the Vietnam War when 15,000 pound bombs with modified fuses were used to create instant LZ's in the Jungle.
Precsion weapons they were not back then.