It takes 16 people to operate the fully articulated Shrieker. Each of the levers control a different aspect of the creatures movement. On the films tight budget it was impossible to pay 16 puppeteers to stand around all day and do only 60 minutes of actual work (which is usually the case on large budget films). When filming the Shrieker, cast and crew members were pulled away from whatever else they were doing to operate a lever. Here Tremors Producer Nancy Roberts (left) takes he r turn at the controls. Ron Underwood, (not pictured) director of City Slickers also took his turn right along with everyone else. There were several times when there simply were not enough free people to work all the controls.