This would have been the third of eight flights by Orbital Sciences under the Commercial Resupply Services contract with NASA.
This was the first attempted flight of the Antares 130, which uses a more powerful Castor 30XL second stage, and the last flight of the standard-sized Cygnus Pressurized Cargo Module.

In an Orbital Sciences tradition, this Cygnus spacecraft was named Deke Slayton after one of NASA's original Mercury Seven astronauts and Director of Flight Operations, who died in 1993.
This would have been the third of eight flights by Orbital Sciences under the Commercial Resupply Services contract with NASA. This was the first attempted flight of the Antares 130, which uses a more powerful Castor 30XL second stage, and the last flight of the standard-sized Cygnus Pressurized Cargo Module.
In an Orbital Sciences tradition, this Cygnus spacecraft was named Deke Slayton after one of NASA's original Mercury Seven astronauts and Director of Flight Operations, who died in 1993.
Cygnus CRS Orb-3