 Other notable incidents include in Season 4 when he was kidnapped by "The Grave Digger" and had to find his way out of a decommissioned Navy ship rigged with explosives; in Season 6 when he was forced to pursue rogue vigilante sniper Jacob Broadsky through a container terminal without back-up; in the Season 9 episode "The Sense in the Sacrifice" when he tracks down tech-savvy serial killer Christopher Pelant undetected through an abandoned power plant alone and armed with only a knife, rifle and pistol; and in the season 9 finale where he utilized his knowledge of explosives to singlehandedly subdue former special forces operatives who were sent to assassinate him.A highly skilled marksman, Booth is well-known within the Bureau as a "legendary shot".While in the Army he achieved the "Expert" Marksmanship Badge and is still proficient with a sniper rifle.