Yes. Basically Eastern Europe, which is what the US actually needed. Bulgaria speculated a bit for the opportunity to spend 1bn on weapons for their second hand F16s (better than plowing MiG 21s that they had).
Probably also why we now have a flood of lame Trump jokes about Meloni.
Tbf this is only the position of a few extreme governments. Other European countries have been perfectly happy to let the US use their bases for this.