Question: What company was the fifth-largest defense contractor in the world in 2015 and is part of the VITA working group?
Sentence (from "VPX"): VPX, formerly known as VITA 46, is an ANSI standard (ANSI/VITA 46.0-2007) that provides VMEbus-based systems with support for switched fabrics over a new high speed connector.
Relevant evidence: No