October 17, 2011 - 8:50am
Guardrail MG 6399

The U.S. Army has fielded four of 14 planned RC-12X Guardrail signals intelligence (Sigint) aircraft with sensor packages from Northrop Grumman. Three more of the modified Beechcraft King Air turboprops will be delivered by early next year, with the balance by the first quarter of 2013, the company said.