Col. Collins kept a good sense of humor about staying behind in the command module while Armstrong and Aldrin set foot on the moon.
![](https://b1866339.smushcdn.com/1866339/wp-content/uploads/2021/04/NASA-LOGO-e1617631070269.png?lossy=1&strip=1&webp=1)
![](https://b1866339.smushcdn.com/1866339/wp-content/uploads/2021/04/NASA-LOGO-e1617631070269.png?lossy=1&strip=1&webp=1)
Col. Collins kept a good sense of humor about staying behind in the command module while Armstrong and Aldrin set foot on the moon.