Gemini IV, crewed by @NASA_Astronauts Jim McDivitt and Ed White, splashed down in the Atlantic Ocean #OTD in 1965 after a successful 4-day mission including the first ever American spacewalk.
More about Gemini IV: https://go.nasa.gov/3quLq9O
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Gemini IV: Learning to Walk in Space
During Gemini IV, two astronauts not only stayed in orbit four days, one performed America's first spacewalk.NASA