One of the U-2 surveillance flights that Eisenhower ordered ended in spectacular disaster on May Day 1960, when the Soviets shot down the aircraft and captured the pilot, Francis Gary Powers, alive.
No matter in the battlefield, it happen in biological or nuclear pollution accident site, earthquake or other nature disaster site, video surveillance is particularly important.
无论在战场、在发生核生化污染事故现场、地震或其他自然灾害现场，视频侦察尤为重要。
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This lack of maritime surveillance and disaster preparedness is not unique to the great circle route, but the nasty local conditions are.