the plan calls for thousands of u.s. marines to be shipped out to guam but after once the air station is moved from a densely populated area on okinawa's main island. many locals are opposed to the plan because they want the base moved out of okinawa entirely. that's prompted the u.s. and japan to change their agreement. the marines will be transferred first as details of the relocation are worked o ut. >> translator: i instructed the defense ministers to conduct sincere discussions with the u.s. to maintain the deterrence but eliminate the burden on the people of okinawa. >> japan and the u.s. remain committed to reducing the impact of u.s. forces on the people of okinawa. still, the two countries also made it clear the united states will keep about 10,000 marines in okinawa to maintain det deterren deterrence. what's behind the agreement?