"I can't shake the nagging feeling...that we should be a lot further along than we are and we're losing ground to our competitors," former Deputy Secretary of Defense Bob Work said.

After a monthlong pilot of its mandatory move to Microsoft Windows 10, the U.S. Marine Corps said it is confident it will complete the transition prior to the deadline next year.

The Pentagon could be less than six months out from full operational capability in the consolidation of IT services for its offices across the national capital region.