Ross Jenkins

Private Ross Jenkins, code-named Greyhound Forty, was an UNIT soldier during Operation Blue Sky.

Biography
Jenkins acted as the Tenth Doctor's escort and driver for the investigation of the Rattigan Academy. They met Luke Rattigan and the Sontaran General Staal. After losing control of an ATMOS-controlled UNIT vehicle, he and the Doctor parted ways so Jenkins could acquire another ATMOS-free vehicle to get to UNIT's temporary headquarters. (TV: The Sontaran Stratagem)

When Sontaran troops invaded the ATMOS factory, Ross was with a small group of UNIT soldiers. He had just enough time to warn the Doctor that UNIT's bullets could not harm them before being killed by Skorr for failing to hide behind a wall. (TV: The Poison Sky)