Ok, out on a limb here, but the first thing that occurred to me was...
blowing up underground “trafficking” tunnels???
Very interesting.
Demolition types of my acquaintance take considerable pride in their ability to "blow the **** out of things without making the tea dishes rattle next door".
They would consider a "loud boom" as amateurish and unprofessional.
...my vote would be for a sonic boom from (probably) military aircraft, but they don't favor waking their customers with loud noises either.