DER means Departure End of the Runway in Military
Similar to DER
60SSC - 60th Signal Service Company615 AMOG - 615th Air Mobility Operations Group
63B - Light Wheeled Vehicle Mechanic
63Y - Track Vehicle Mechanic Mos
643ASG - 643rd Area Support Group
645TD - 645th Tank Destroyer Battalion
66 TAC - 66th Tatical Aviation Command
View all in Military