TUCSON - The U.S. Border Patrol agent shot and killed in Naco Tuesday morning was the first Border Patrol agent killed by gunfire since Agent Brian Terry was shot to death in December, 2010.

Agent Terry was killed in a shootout with Mexican bandits near the border in Rio Rico. The shooting was later linked to the government's botched Fast and Furious gun smuggling operation. Coincidentally, the border patrol station in Naco was recently named after Terry.

Four other agents have died in "line of duty" traffic accidents since then. Agents Eduardo Rojas and Hector Clark were killed in May, 2011. They were tracking a group of illegal immigrants when their vehicle was struck by a freight train near Gila Bend. Another agent was killed in a crash while patrolling near Fort Hancock, Texas. And in July, a fourth agent was killed while assisting a disabled motorist near Cline, Texas.