COG Tag 7 is on the lower level of this area by the caged Tickers.

Shoot the explosives next to them and head through the side door. If no horns are blown, the side door will open and some enemies will come out. Try to hit one in the head, then catch the one on the right in a blast of yellow canisters. We are not able to provide support for Legacy games: Gears of. The hardest Locust to snipe are the pair over the final gate. Our team at The Coalition currently only provides support for Gears of War Ultimate Edition, Gears of War 4, Gears POP, and Gears 5. Equip a pistol with zoom for sniping, since the sniping tools in the level are far too slow. This is easiest to do on Casual difficulty if you are alone. In the area with the Locust horns, you must snipe all of the Locust before the reach their horns and a side entrance (and alternate path through the level) will appear. Circle this container to find the tag on the ground opposite the omen. Just after Prescott dies, look around for a Crimson Omen on a cargo container. Shoot it and it will drop the Captain’s Log to the ground below. Here is the list of executions you can unlock, and how many kills you need to get with the weapon in order to unlock its execution. There are 15 COG Tags and 42 Collectibles for a total of 57 things to pick up in Gears of War 3. Look above this dead end and you’ll see a wooden box hanging precariously on a ledge. In Gears of War 3 for the Xbox 360, there are quite a few executions you can unlock by getting a certain number of kills with the associated weapon. On the right is a dead end with some boxes and a few Locust. After the first Siege Beast you’ll face a forked path.

Gears of war 3 executions