It was unnerving to see a Congregation of Praying Mantids (Swarm would be a dumb name for a group of Praying Mantids).  I’d only ever seen one at a time, but working where we did, there were an untold number of them.  They were EVERYWHERE.  Being cannibals, that was weird.  We were convinced there was some sort of nuclear testing being conducted in the desert and these alien insectoids were the beginning of something much more sinister.  Have I said too much?  Do you hear helicopters?