On 11/25/15 at 1525 communications alerted units for an auto accident with entrapment on I-81 at mile marker 20 North bound a 7-81-15 box. Chief 7 was one of the first units to arrive on scene and found the accident to be in the South bound lane just South of mile marker 20 making it a 7-81-44 box. One tractor trailer and one passenger vehicle was involved. There were two fatalities, one patient was air lifted to Hershey Medical Center and one patient taken to Chambersburg Hospital. Units remained on scene for several hours assisting the coroners office and PSP. Roads in the area were very congested due to the traffic being diverted off the interstate for the entire time. Our prayers are with the Family and Friends of those involved.