Domestically, slot machines are prohibited on military bases, though casinos are frequently located nearby. The VA began treating gambling disorders in the late 1960s, about nine years after Congress banned slot machines from domestic bases. The Department of Defense declined CNBC's request for an interview, but said in a statement there hasn't been any systemwide increases in resources to address problem gambling. "DoD researchers are aware of changes in gambling availability due to new mobile and sports gambling options and will consider these variables in future military gambling research," a department spokesperson said in an email. The military is conducting a new survey, with results expected in the fall, the spokesperson addedThe Department of Defense operates slot machines on military bases abroad.

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Persons: Dave Yeager, Yeager, servicemembers, Heather Chapman, It's, Dominick DePhilippis, Chapman, hasn't Organizations: Istock, Army, Defense Department, CNBC, Department of Defense, Office, Lewis, McChord, Department of Veterans Affairs, DoD Locations: South Korea, Washington, U.S