Whiskey Tango Foxtrot One
From Halopedia, the Halo wiki
During Operation: SUNSPEAR in December, 2552, Gray Team used this lifeboat to flee their damaged prowler and narrowly escape the destruction of the planet Glyke. Prior to doing so, they had installed three of the prowler's cryo-chambers in its bay in order to enter cryostasis and await retrieval after the mission.
Nearly six years later, the lifeboat was found floating in Glyke's debris field by a Sangheili fleetmaster, Rojka 'Kasaan, and taken aboard his flagship, Unwavering Discipline. After they had awakened from cryo-sleep, the Spartans stole back their lifeboat and fled the hangar bay, only to crash-land on the planet Carrow. They were forced to push the mangled transport underwater in order to extinguish its fire so as not to attract unwanted attention.
As was typical of Gray Team, they went against protocol in naming and designating their Bumblebee; "Whiskey Tango Foxtrot" is military slang for "what the fuck."
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