<Li> Joint Force Headquarters - Guam, Guam National Guard--Radio Barrigada and Fort Juan Muna </Li> <P> In addition to on - shore military installations, Guam, along with the rest of the Mariana Islands, is being prepared to be the westernmost military training range for the U.S. Guam is currently viewed as a key military hub that will further allow U.S. military power to be projected via sea and sky . </P> <P> The U.S. military has proposed building a new aircraft carrier berth on Guam and moving 8,600 Marines, and 9,000 of their dependents, to Guam from Okinawa, Japan . Including the required construction workers, this buildup would increase Guam's population by 45% . In a February 2010 letter, the United States Environmental Protection Agency sharply criticized these plans because of a water shortfall, sewage problems and the impact on coral reefs . By 2012, these plans had been cut to have only a maximum of 4,800 Marines stationed on the island, two thirds of whom would be there on a rotational basis without their dependents . </P> <P> With the proposed increased military presence stemming from the upcoming preparation efforts and relocation efforts of U.S. Marines from Okinawa, Japan to Guam slated to begin in 2010 and last for the next several years thereafter, the amount of total land that the military will control or tenant may grow to or surpass 40% of the entire landmass of Guam . </P>

How many troops does the u.s. have in guam
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