Grom

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The Grom, formerly the UNSC Kursk, was an Aeolus Class Frigate of the UNSC Navy, and later the. Laid down on May 16th, 2554 as the UNSC Kursk, the ship was deployed to the Thodorus System with the intention of destroying any rebel groups in advance of colonizing the system

However, on December 15th, while the Kursk was patrolling an asteroid field, looking for a supposed rebel base, it was contacted by what appeared to be a civilian ship, who was begging for help after they stated that they had been assaulted by rebels. After the Kursk allowed the craft to dock with it, a large force of boarders poured from the ship, and managed to take control.

Rechristened the Grom by the rebels, the frigate was taken back to the rebels' base for a repair of the damage taken during the boarding, after which it began a series of attacks on UNSC supply convoys or installations. These attacks lasted until about 2557, when the Grom was ambushed by a group of, and destroyed.

Construction and Deployment
Originally laid down on May 16th, 2554 as the UNSC Kursk, a part of the Aeolus class of frigate. After its shakedown cruise in the Zeta Norma System, the Kursk finally began its deployment on August 18th, 2554, departing for the Thodorus System. The ship's mission was to destroy any and all rebel groups in the system in preparation for colonization of it.

For four months, the ship only ran into scattered pirates and a few Insurrectionist vessels. However, on December 14th, the Kursk captured a rebel cargo ship, as well as one of its crew who was unable to kill himself. After one and a half days of interrogation, the man finally gave up the general position of the rebel base in the asteroid field. With this information, the Kursk immediately began to move into the field.

Capture
As the frigate was moving in on the asteroid field to look for the base, it received a distress call from the crew of a civilian ship, who stated that they had been attacked by rebels, and, despite having escaped, needed immediate aid. The ship, despite it's mission, agreed to allow the crew of the crippled ship aboard. However, unbeknownst to the crew, the ship was actually part of the Insurrection, and was carrying a boarding party.

After the ship docked with the Kursk, a large force of rebels boarded the frigate. In a protracted battle, a team of rebels breached the ship's bridge, and threatened the remaining UNSC onboard with decompression of the atmosphere aboard if they did not surrender. After the rebels threat, some of the UNSC onboard began to surrender, and the rest who were not killed by the boarding parties, were by the decompression of their sections of the ship.

Raiding
After the ship's capture, the rebels took it back to their base, and rechristened it the Grom, and, once they finished repairing the damage done during the boarding, as well as loading a massive amount of supplies aboard, the ship left the base for its first deployment as an Insurrectionist ship.

For the next few years, the rebels attacked UNSC convoys, as well as some installations, including a few shipyards, using the Aeolus class' speed and agility to make attacks and get out before an effective response could be mounted. These raids, despite not affecting the UNSC's ability to wage war, were delaying the recolonization and rebuilding post Human-Covenant War

Destruction
With the ship continuing to attack the UNSC, a mission was eventually mounted to destroy the Grom in 2557. To this end, the UNSC set a trap, with a convoy of civilian ships, unprotected by an escort, and prepared a force of Paris Class Heavy Frigates to destroy the ship.

Once the Grom took the bait, the UNSC moved in the frigates, and, despite a spirited fight put up by the rebel frigate, it was eventually destroyed when a Magnetic Accelerator Cannon round from the UNSC Buffalo tore through the Grom.