This is standard throughout the DOD. There is a long-standing policy that the government should not be in competition with private industry, hence routine services like security, maintenance, and the like are required to be contracted out. The work goes to the low bidder, with the usual preferences for minority-owned companies, so you get no more than what you pay for (and generally less). You can't blame this one on King Barry.
Fresh is correct, it also comes under the decision to reduce direct military strength/costs by having any mission that can be done by a civilian contractor be contracted out and keep the military focused on their combat mission, not guarding gates, washing dishes and peeling potatoes in the mess hall (whoops ‘dining facility’)
That goes back to the decision for an all volunteer military after the end of the draft in 1973.