airandspaceforces.com

b6MxZ TIL of Robinson Risner, who, during the Korean war, has used his own plane to intercept a friendly running out of fuel & hydraulic oil after taking damage and used the plane through a careful collission to push/lift his comrade's into safety
X0LPQ TIL that Buzz Aldrin (Apollo 11) was nicknamed "Dr. Rendezvous" by other NASA astronauts. Aldrin—with an MIT PhD—knew that it was not a compliment.
DQ4mY TIL that an aircraft crash resulting in the pilot's death or total destruction of the aircraft is called a "Class A Mishap" by the US Air Force.