protecting themselves using terrain masking. so, they're blending into the terrain. they're going under underneath trees and any other area that would cover them from aerial observation. they want to protect themselves from drones. they want to make sure they can survive any type of attack from the air. the ukrainians have drones they're using, turkish drones that are able to not only spot them, but they're able to use them to go after some of these targets on the ground. this becomes the really important thing to do. what is surprising, don, is that they haven't done this. the russians haven't done this before. they're only doing this now. before the convoy was a sitting duck. now it's moving so it's less of a sitting duck, but it's still somewhat vulnerable because we know where some of these vehicles are. >> it is interesting. i don't think they -- correct me if i'm wrong -- if they really anticipated this kind of resistance. and that probably was the holdup there. they had to restrategize.