MC-12 LIBERTY A worker briefs Defense Secretary Robert M. Gates on the MC-12 Liberty aircraft during a tour of the production facility in Greenville, Texas, Aug. 31, 2009. The MC-12 is a medium-altitude manned special-mission turboprop aircraft designed for intelligence, surveillance and reconnaissance which will be deployed in theatre in support of coalition and joint ground forces. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 584040-O-YBG97-218.jpg Photo Gallery