July 30, 1945 – Japanese submarine I-58 sinks the USS Indianapolis (CA-35).  Indianapolis was returning from Tinian island where it had delivered the atomic warhead for “Little Boy“, the bomb destined for Hiroshima, Japan.  Of the 1,196 crewmembers aboard Indianapolis, 879 perished, the majority losing their lives due to dehydration or sharks after surviving the initial torpedo blasts and sinking.  The survivors floated at sea for four days awaiting eventual rescue, the delay having been caused by the secret nature of the ships mission.

July 30, 1971 – Astronauts David Scott and James Irwin of the Apollo 15 mission, aboard Lunar Lander Module “Falcon”, land with the first Lunar Rover on the moon.

July 30, 1971 – An All Nippon Airways Boeing 727 and a Japanese Air Force F-86 Sabre collide over Moioka, Japan, killing 162.