For the 1RM, the thruster can be taken from a rack. For Part 2, the thruster needs to be taken from the ground.
The goal should be to reach the 12-15 minute mark during the ladder. If you fail before 10 minutes, decrease the weight and join in on the next minute. OR, keep the same weight and hold a number that you know you can do for the remaining 4-5 minutes.
As many reps as possible in 10 minutes:
50 Double unders
10 Overhead squats (105/70)
NOTE: Goal is 7+ rounds. This workout is very much like an open workout, light and fast. Try to hold a round per minute for as long as possible.