Regrettably, the third operational mission, Cygnus CRS Orb-3, resulted was not successful due to spectacular Antares failure during launch.

The Antares system was upgraded with newly built RD-181 first-stage engines to provide greater payload performance and increased reliability.

Two of which flew on the new Antares 230 and one on the aforementioned second Atlas V. These three missions enabled Orbital ATK to cover their initial CRS contracted payload obligation.

Slingshot will deploy two satellites (David and Goliath II Quantum Radar, both launched on board of the previous Dragon CRS-16 mission), that are expected to stay in orbit at least two (2) years.

After Cubesat deployment and conclusion of attached experiments, Northrop Grumman controllers commanded the spacecraft to a destructive re-entry over the South Pacific Ocean on 25 February 2019.

The Antares rocket was built and processed in the Horizontal Integration Facility (HIF) over the course of six months.