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The P-3 Orion has a periscopic sextant for celestial navigation, in case the GPS and inertial nav both fail. Granted, the former wasn't around when the plane w
by vonmoltke 12y ago
The P-3 Orion has a periscopic sextant for celestial navigation, in case the GPS and inertial nav both fail. Granted, the former wasn't around when the plane was designed, but the Navy keeps them on the aircraft and keeps the navigators trained in their usage.
Your friend's bird, particularly if he was in recently, was an EA-6B Prowler, the electronic warfare variant of the A-6.