DM-F3 (Delta Mission Flight Three) is a simulated payload made up of steel and aluminum plates and cylinders that produce the same dynamic characteristics and mass properties of a Hughes HS-601 satellite.
The Delta III rocket was an expendable launch vehicle made by Boeing. The first Delta III launch was on August 26, 1998.
Boeing as a space agency has recently provided NASA with assistance on sending humans to the ISS from American with both their construction of the CST-100 Starliner crew capsule and their work on the SLS Avionics to return to the moon and beyond. Their ventures in GPS satellite systems and Tracking and Data Relay Satellites provide information about earth-orbiting craft to stations on the ground. They also enable research on the ISS and will be helping with the construction of the Lunar Gateway.INFO WIKI