The UNSC Pony Express was a UNSC corvette. As of 2552, it was the fastest ship available to the UNSC. During the Battle of Earth, the Pony Express was at Earth fighting the Covenant. After receiving a message from Dr. Halsey, Lord Hood planned on sending the Spartan-IIs to Onyx aboard the Pony Express, but they opted to instead capture a Covenant destroyer, the Bloodied Spirit, which was faster than even the Pony Express.