Understand this goes all the way down to day to day LEO and concealed carry.
Fire code as well as state DOT codes come into play. You, or your local LEOs can't just store ammo anymore in any old plain building. Now both storage and transportation must meet much more highly restrictive levels. Think of LEOs who are carrying spare "EXPLOSIVE" ammo in the trunk of their car. Heck what's the regs on carrying "EXPLOSIVES" by anybody in public places?
Of course, state and local governments could exempt LEOs from compliance of such.
I can see it though, somebody who was shot in the commission of a crime, will sue the LEOs for using excessive force. Explosives.