(Portland, OR) -- The Department of Homeland Security is using a helicopter to monitor the demonstrations around the ICE building in South Portland and residents in the area are complaining. More than 40 noise complaints have been filed with the Port of Portland and that's four times the normal number of calls. Oregon Representative Suzanne Bonamici, Representative Maxine Dexter and Oregon's two Senators have sent a letter to DHS asking for answers about why and what can be done to reduce the use of the helicopter.