Majuro (Marshall Islands) (AFP) - A clean-up operation was underway Thursday after giant waves flooded a key US military base on the Marshall Islands in the heart of the South Pacific. Huge breakers pummelled the US garrison at Kwajalein Atoll last weekend on Roi-Namur island, where some of America's most sophisticated space and missile tracking equipment is housed. Video footage from inside the garrison showed surging water from the waves knocked over bystanders, smashed open glass doors and shattered windows. Around 80 of the 120 personnel had to be evacuated, the US military said, and a 60-...