Demonstrators are reporting the NYPD's use of Long Range Acoustic Devices (LRADs) against protesters during today's Occupy Wall Street "Day of Action." The machines are meant to send out "high intensity" noise over large areas, and "allow for near instantaneous escalation across the force protection spectrum," according to the official product overview. Twitter user Joshua Paul snapped the accompanying photo, which seems to match the LRAD 100X model, and writes: "High pitched noise. Natural reaction: My face scrunched and hands started moving to my ears. Length was around 5 seconds." The OWS Twitter jokes, "Didn't we get evicted for our drums being too loud or something?"