The shapes, and the fact that 2 of them are extra deep boxes, and the fact that the back end is clear for a cheater bar leads me to guess they are crank bearing wrenches. The 90 gets you in between bearing pillars, and the double kicked one would get you over the bearing cap.
The opening sizes are rather large for that, but not impossible (say for a large diesel engine)
Only a wild guess tho. SW did make some pecular things for the govt.....