Famed U.S. astronaut Buzz Aldrin appeared to endorse Sen. Martha McSally, R-Ariz., in her race against retired astronaut Mark Kelly, a Democrat.

"Martha, check six - Mark? Buzz - over 100 jet hours in Arizona," the 90-year-old wrote on Twitter on Saturday. "12 o’clock is straight ahead. 6 o’clock is behind. Fighter pilots understand what 'check six' means in FTR lingo talk. Martha, wave as you move ahead past Mark, to 12 o’clock, and you win for Arizona!"

Aldrin is best known for piloting the Apollo 11 Lunar Module in 1969. Aldrin and fellow astronaut Neil Armstrong were the first two humans in history to walk on the moon.

This article was sourced from Foxnews