Michael Bay had been quoting in saying that Transformers 3 would have a very Black Hawk Down feel to it. While elating many people (me myself included) it may have given a clue to how some scenes would work. First, as displayed by this screen cap, The autobots are fighting decepticons on their own. you don't see any Nest or Army soldiers backing them up with gun fire. Yet here, you see the autobots arriving to help Nest fight the decepticons. where did Nest go in the time between The screen cap and the video. ^In this video you see Shia run by behind the soldiers and bee. Perhaps Nest is guiding Sam to safety to safeguard whatever macguffin hes got. Definitely didn't stay with the Autobots for the screen cap to happen and optimus to arrive and stop the cons from slaughtering his autobots. So Shown here when Nest gets backup from 5 Stryker army transport vehicles, Much like in BHD. Im not sure about you guys but I'm getting a real good end of the end vibe from this scene. Also let it be known and assumed that the autobots are meant to be in the shot shown with the Stryker back up scene.