Warmup
Do all of the Emiliano at home shoulder warmup, then do:

Murph Accessory Prep
For quality
10 sets of
1 max set of pushups
:30 rest

Make these pushups perfect.

Workout
4 Rounds for time, for all versions
400m run
50 air squats

This a classic unnamed CF benchmark.

If you want a blast from the past, here is a video of Zach Pine and Chris Spealler both going sub 10. Most of us will be more in the 15-20 minute range! https://www.youtube.com/watch?v=lb4TdxAqu0A