Pardon me, but I carry a .45acp both working and not working. So do about 100 other LEO I know. There are two agencies in the tri state area that have gone to .45acp.
Many Feds carry .45acp.
Of course, there are those agencies that still believe the 9mm will stop superman and infiltrate the thickest building wall. It all boils down to cost. Ammo for a 9mm costs a little less than .45acp so the dept uses a 9mm due to cost rather than performance and officer safety.
It is my understanding that the US Army is going back to the 1911 in .45acp since it has been proven to be a better caliber/gun.
Does anyone know why the big bandwagon went over to the 9mm in the first place? Thank NATO and the UN for it. They wanted a less fatal round that would be universally accepted. I was at a seminar back in Feb and that was a topic of discussion. Locally, the 9mm lasted less than three yrs before being replaced. Just 10 miles away, another agency is going to the .40 from the 9mm after over 20 yrs. Theey learned it was not as effective for LE work.