In the air they are highly survivable long range bomb trucks, that all these ones had to be destroyed in drone attacks on the ground is kind of evidence of that.

The US has used its strategic bombing forces for non nuclear attacks extensively as well, including known use of the B2 against the Houthis and B52 against IS in Syria.

Oh that’s what’s freaking them out?

Does this even matter?? The chilling effect of 245% vs 145% or even 45% has gotta be pretty marginal.