Study - Overseas Slot Machines Do No Significant Harm: WASHINGTON — The Defense Department has concluded that the thousands of slot machines on overseas U.S. military bases pose no significant harm to the morale or finances of American troops. The Pentagon spent more than six months studying slot machines for a report ordered by Congress. Investigators acknowledged “isolated instances where slot machine use has had a negative impact on specific individuals.” But the report said military personnel stationed at overseas bases that offer slot machines actually experience fewer instances of financial problems than do those stationed in the United States.