The govt has enough ammo, large quantity of hollow points (which have a specific use and going to the range isn’t one of them), to sustain an Iraq type war when it was at its most violent for 24 years. 2,700 armored vehicles (MRAPS) designed to withstand an IED attack. Drones being specifically built for use in the US to track cell phones and know whether someone is armed or not.
No one in DC is really addressing this arming up DHS and other agencies.