...and, uh, wtf is this?

I know it's some sort of insect related to the bee but it's like a bee on steroids! I watched this crazy flying thing pick up a cicada and fly back to what I now think is it's home under our front steps. Cicadas are quite large so this was an odd sight and I was unable to get a photo due to it landing in a bush. I just wonder what they are because they are getting to be a nuisance when I want to relax on the porch.