Russia's hunted A-50 command planes are its eyes over Ukraine. Here's how it compares to the Boeing E-3 Sentry.

Tech Insider
A US E-3 Sentry, at left, and a Russian A-50 are early warning aircraft that play critical roles in military operations.
A US E-3 Sentry, left, and a Russian A-50 are early warning aircraft that play critical roles in military operations.

Staff Sgt. Michael Battles/US Air Force, Misha Japaridze/AP Photo

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