Honest question - I am not an American: What is a 'local' PD in the LA Area? How many PDs does LA have? And do any of them allow not only officers to choose thier own caliber, but allow .45 ACP? Not that I have anything against it, given the choice I would carry the .45, but I know it is very un-politically correct caliber, and a lot of PDs do not allow them just because of its association with the military.
I guess I am just a bit suspicious of this post.
There's a ton of departments in the LA area. LAPD Swat uses the .45. There's also the LA Sheriffs Dept. Long Beach has a department. I'm not aware of any that permit choice of caliber, or even frequently the choice of weapon.
Some departments in the real west (not California) still permit choice of weapon and caliber, but they're getting fewer and fewer. Lawyers for departments like uniformity of weaponry and ammo for defense in the inevitable lawsuits that occur when some scumbag gets smoked.
The use of a given caliber by the military has nothing to do with it.
There are 88 cities in Los Angeles County....last time I looked.
As for law enforcement strictly within the City of Los Angeles, I can think of:
LAPD
LASD - Transit Services Bureau (Subways and busses)
LA Port Police
LA GSD Police (protects city buildings, libraries)
LA Park Rangers (protects city parks)
LA County Safety Police (protects county parks/buildings)
LA Airport Police (Van Nuys and LAX)