Once you've reached the center of the bridge (marked by a gold, circular railing) continue to the broken part in the middle of the bridge and turn around to find a COG tag.
Clear the Courtyard until a rager bursts the door in the next building open. Continue inside and clear the building. You'll find a COG skull on the wall to the right. The COG tag is located inside the small room to the left, before the hallway.
After clearing the first lab area, continue to the control room to the right and pick up the COG tag in the corner of the far side of the room.
Clear the enemies in the next room the enter the burning room ahead. You should spot the COG Tag Skull. Enter the next room through the burning hole and find the COG tag in the corner of the room, behind the tables.
After successfully fending off the room and before going outside, enter the room to the right of the exit to find a COG tag behind the door.
Continue outside to the Courtyard and regroup with your team. Don't press UP to end the section yet. Go upstairs behind them to find the COG tag to the right.
Note: This is counted for Section 6: Crash Site
(See above)