The JDAM precision is 5m.

More than 30 years ago:

https://en.wikipedia.org/wiki/Amiriyah_shelter_bombing

"At 04:30 on the morning of 13 February, two F-117 stealth bombers each dropped a 910 kilograms (2,000 lb) GBU-27 laser-guided bomb on the shelter. The first bomb cut through 3 metres (10 ft) of reinforced concrete before a time-delayed fuse exploded. Minutes later, the second bomb followed the path cut by the first bomb."

Huh. Thank you. I'm still cautiously sceptical this scaled to the 57, but less so than before.