First they recon the stadium, then they assault the facility. After linking up with recon team callsign Viking, Hesh and Logan's team at the time, they move in to extract Ajax at the stadium. He would later first be seen on a recon patrol in No Man's Land with Merrick and Ajax. Keegan continued to serve alongside Elias and Merrick. He was one of the original fifteen, at the time of Operation Sand Viper in 2005.
Sometime later after serving and gaining combat experience on the battlefield, he joined the Ghosts. He later made it into the Force Reconnaissance, attained the rank of Sergeant, and became a Scout Sniper.
Keegan joined the United States Marine Corps at a young age and was proficient in rifle training.
