After you manage to get unnoticed by the rooftop guards, your next objective is to 'Rendezvous with the Team' without being spotted by the rooftop guards in Black Ops 6. They patrol back and forth through the area, and some of them stay in one place. Of course, you'll be crouched in this section, but if you can't reach the Mechanical Room without staying out of sight, this guide will help you out.

When you reach the roof, there will be two guards talking to each other, wait a moment and let one of them walk away. You can either do a silent takedown of the guard in front of you to make sure he doesn’t become a problem later, or you can sneak past him and go to the right. Make sure to stay crouched during the process.

Keep going and when you are close enough but still hidden, use your spy camera to highlight the silhouettes of the guards ahead of you. This will be useful because it is quite dark and your task will be much easier if you know where they are standing or moving.

The quest marker will show you where to go, so continue on and perform another silent takedown if you only manage to grab a guard.