Secretary of Defense
Chief of Staff
National Security Advisor
Holy shit, there are Generals all over the place these days, aren’t there?
Retired General James Mattis serves as Secretary of Defense. Retired General John Kelly ran Homeland Security for a bit, before becoming the Lead Executive Branch Babysitter, excuse me, Chief of Staff. H.R. McMaster’s the National Security Advisor, and hell, he’s still on active duty.