From the Potts Grove Fire Company Facebook Page:
Today at approximately 3:30am our engine was arriving on scene to assist with shutting down I-80 due to a tractor trailer accident in turbot township. When setting up to shut off lanes they were rear-ended by a tractor trailer. Fortunately there were no major injuries to engine crew or other driver. This is why slow down and move over laws are so important. Please pay attention and give the emergency crews the room they need to work.