 It still has some snow in June, so a climber must know that conditions won't be different to those of winter. Overnight lows at the peak this time of year on some days dip below freezing. A U.S. Air Force member based in Japan's southern prefecture of Okinawa has been formally charged with the sexual assault of a girl. The indictment says 25-year-old Brennan Washington invited an underage girl to his home in December where he sexually assaulted her.