These people are not only grossly immoral, they are also a threat to national security. Congress ought to pass legislation to put the creeps out of business at once ! But, our current government is way to pro-business to take any serious action like that. Since Congress is not likely to do the right thing; the Installation Commanders where these places are located ought to put them off-limits and post guards to ensure compliance !
In addition to taking action against the loan sharks, perhaps Congress should give the Military a pay raise of sufficient magnitude to quell any desire by the troops to consort with the local loan sharks.