Operation: JOVIAN WHISTLE
In 2553, the UNSC's 717th Xeno-Materials Exploitation Battalion escorted by the Spartans of Blue Team arrived on the planet Gao to investigate a transmission believed to have originated from a Forerunner ancilla on the planet. Following the transmission, there had also been reports of miraculous cures found inside the planet's vast Montero Cave System. The research battalion's arrival was followed by several brutal murders of Gao natives in the caverns, prompting the Gao Ministry of Protection to dispatch Special Inspector Veta Lopis and her field team to investigate. However, the situation escalated into an all-out crisis when Insurrectionist sympathizers within Gao's government, headed by would-be president Arlo Casille, decided to eliminate the UNSC forces and take control of the ancilla. They allied themselves with the militant cult Keepers of the One Freedom and smuggled them on Gao, seeking to use the Keepers as a proxy force through which to accomplish their goals without attacking the UNSC directly.
The UNSC presence in the village of Wendosa included the 717th's Charlie Company, comprising of 150 heavy infantry marines armed with heavy machine guns, missile pods, nonlinear lasers and rocket and grenade launchers. The sole road into the village was blockaded by two M12 Warthogs armed with M41 anti-aircraft guns and the area surrounding the village was mined and trapped, with a series of motion sensors strung up around the perimeter, turning the village into a veritable fortress.
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