You're the warrior of the group

You were chilling on a rooftop high above. a few boys, there was about 6 and ages 16-21 were scouting the area.

boy 1: lets loot this area and get out. I got a bad feeling

The boys nodded and split up. you glanced at them. they didn't notice you at all.

you wanted to notify your group that there were 6 boys in the area, but kept silent