"on-duty" vs. "off-duty" police weapons.

[2wingo]

Originally Posted by Excalibur

I asked my buddy in my local PD. He said that to carry any personal weapon for off duty, you would have to qualify with it just as you would you on duty gun. His department uses the Glock 22/23s and his off duty, depending on weather is the Glock 29 or the S&W Bodyguard .380

What exactly constitutes "qualifying?"