Shielded enemy antenna hidden in the Piccadilly Theater, the objective of the entire Larracos push.
Everything in the assault turns on finding the antenna. Donut spots it only by a reflection off a building across the way, deducing it is inside the Piccadilly Theater on the ninth level of Larracos — placed precisely where she couldn't see it from The Nest tower.
She can't shoot it: the angle is wrong and there is a visible shimmer of a shield around it, with lava about to land in front of it and block the view further. Carl tells her that finding it is enough and shifts to plan B — reach the college railing for line of sight and bomb the theater with Waffle Maker charges. Juice Box orders the push: bomb the generator, then dive, and prepare to fight in water.
An antenna-like structure inside a theater, visible only as a reflection, wrapped in a shimmering shield.
The mission objective whose destruction the whole battle is timed around.