Why does the US military continue to rape and murder innocent civilians in Japan?

"U.S. sailor admits to Okinawa rape: police"
"NAHA, OKINAWA PREF. – A U.S. Navy sailor arrested on a charge of raping a Japanese woman in Okinawa has admitted to the crime, investigative sources said Wednesday."

http://www.japantimes.co.jp/news/2016/03/23/national/crime-legal/u-s-sailor-admits-okinawa-rape-police/#.V0o2tJErKM8


"Pentagon chief apologizes over death of Okinawa woman"
"Kenneth Franklin Shinzato, a 32-year-old former marine, was arrested Thursday for allegedly abandoning the body of Rina Shimabukuro, 20. He has since admitted to sexually assaulting and killing her, according to investigative sources."

http://www.japantimes.co.jp/news/2016/05/22/national/crime-legal/pentagon-chief-apologizes-over-death-of-okinawa-woman/#.V0o1zJErKM9