RT @airandspace: Today in 1972: @USNavy deep sea submersible Trieste II (DSV-1) recovered a secret spy satellite film return capsule: ow.ly/wc3bK
RT @airandspace: Today in 1972: @USNavy deep sea submersible Trieste II (DSV-1) recovered a secret spy satellite film return capsule: ow.ly/wc3bK