Halo Legendary Crate/Data Drops
UNSC Data Drop is a collection of classified documents, all of which are owned by Spartan-IV 92738-61842-LC of Fireteam Apollo. These serve as the lore behind the Halo Legendary Crate, and are usually based around the theme of the crate it is in.
Series 1 goes over a mixture of stuff ranging from several parts of the Halo Universe, mostly from Fireteam Apollo's operations.
List of data drops
"Vergil" Interrogation Findings 1/4