I wish President Trump would pull an Obama and simply issue a Presidential Order that said all "unfunded" federal employees would be considered "Department of Defense" employees (since the military has a budget), and that they would immediately be paid what the U.S. Government owes them via DOD funds until such time as Congress returns to work and does it's job.
There is no way the FBI should be expected to take a bullet during the course of an investigation when their families are missing mortgage payments, school tuition, etc. There are many FBI employees in harm's way every day as they continue to conduct surveillances, meet with sources, serve warrants, make arrests, etc.
It won't be long before all of that comes to a screeching halt.
The FBI are logically less entitled to be under DoD then say, Border Patrol. By nature of the title "DoD", a logical person would assume Border Patrol fits that description, as they are "defending" the nation's borders.
If we ever saw "relief" funds curtailed in this country for any reason, we'd see quite a "thing".
