It is also interesting that they are buying 115gr HPs. Most departments usually purchase 9mm bullets that range between 124gr to 147gr. The light and fast 115gr crowd is usually ignored due to shallow penetrative since the ability to hit vital organs, and thus penetrative between 12 to 18 inches, is critical. Thus, many users opt for 124gr bullets (eg the Speer Gold Dot 124gr +P bonded bullet that is used by the NYPD), 147gr bullets (eg the Winchester Ranger Bonded 147gr standard pressure bonded bullet used by the FBI, and the 147gr Federal HST that has an expansion of up to 0.77 ...amazing round ), and intermediate bullets (eg the Winchester 127gr +P+ Ranger T).
115 grains? Not so much.
Thus it is quite interesting there are over million of them on order.