It is video that shows just how frightening an armed robbery must have been Monday night. Greenville police have surveillance video of a robbery in progress at the Duck Thru on Greenville Boulevard. The faces are hard to make out, but the video clearly shows one person has a silver pistol and is demanding cash from the clerk. The clerk hands over the money, and that's when the two take off running from the store. No one was injured. The suspects are still on the loose.