[UPDATE, April 8, 2016: We published new information related to this article here.] The U.S. Department of Defense on June 15 started what may become its first centralized lodging program. The initiative includes new booking policies and modifications to the much-maligned Defense Travel System. Even as DoD looks to upgrade or replace the aging DTS, it’s just now adding the capability to book government-owned lodging options. Northrop…