Mark One Eyeball
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Colonial Military term for visual reconnissance or flight plans improvised by the pilots themselves when searching for wreckage, survivors or managing other mission objectives. This becomes necessary when the use of technology isn't applicable or available due to unforeseen, unpredictable, or hazardous changes in completing a mission or task.
Commander Adama ordered such a search for Kara "Starbuck" Thrace (You Can't Go Home Again) when her ship was heavily damaged by an encounter with a Cylon Raider squadron (Act of Contrition).