I don't know if they are blowing them up more or if it's just reported a little more noisily on the news. Some robots have xray things on them to look inside the package, some just gently open the pkg if possible.
If they can't determine what it is, they'll put it in a bomb trailer and detonate it either onsite or take it somewhere if they think its safe to transport.
And we still have the 'kewpie' doll suits for the bomb people where they actually handle it themselves. Talk about God, Guts and Glory!
99.999% of the time it turns out to be someones laundry, office papers, groceries or the like.
I've wondered about how someone feels when they see their dirty skivvies blown 50' into the air on the news...
