Not enough milfags on here. D5 = Trident missile with kinetic warheads. Tungsten rods of God that can destroy a rather large area.
I think we used these for recent strikes in Syria to warn the cabal. Russia had to be notified in advance because missiles would appear to be a nuke launch if Russia didn't get the heads-up.
We can use them to strike anywhere in the world, pretty much at moment's notice.