Great question. OCONUS is a whole other can of worms, and because of the difficulties in trying to standardize a worldwide policy, the policy is simply a fam-fire once per year (not even an actual qual). Some do more. One of the members here used to organize near monthly multi-gun matches between his personnel and a SOF unit with a permanent rotation in country, which obviously represents the high end and is extremely uncommon.
Domestically, I think the given LE ranges may depend on the state and their course of fire. We didn't have access to a 50 yard range when I was posted at NYC, and the police range we shot at was 25 yards. Even if 50 yards are available, there's many, many more 25, so it's just all around logistically easier.
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GJM, not sure if you're trying to get a general idea or not, but here's some info about my agency if you're interested:
A qual failure gets an immediate retest. If failed the 2nd time, the agent's gun is seized and they're reported to their supervisor. At that point they go onto a formal PIP and have to go through remediation before allowed to retest.
As they can no longer fulfill their LE duties, they should also lose their LEAP (Law Enforcement Availability Pay), which represents 25% of their base salary. I'm not sure of how that notification happens, and whether it's likely or unlikely to happen (i.e if it's up to their first line supervisor who might not care).