Report: Antares AJ-26 Engine Fails During Static Fire at Stennis

AJ26 test firing. (Credit: Aerojet)
AJ26 test firing. (Credit: Aerojet) reports on a failure of an AJ-26 engine during a static fire on Thursday:

One of the AJ-26 engines set to launch with a future Antares rocket has failed during testing at the Stennis Space Center on Thursday. Sources claim the engine “exploded” on a Stand located in the E Complex at the famous rocket facility. The failure is currently under evaluation, although it may delay the next Antares launch that is tasked with lofting the the ORB-2 Cygnus to the International Space Station (ISS).

Not a lot of details at this point.  I’ll update this post as more information becomes available.