Defense Secretary Leon E. Panetta teaches a history class at John L. Chapin High School in El Paso, Texas, Jan. 13, 2012. Students of Kristina Mills’ 11th grade U.S. history class were treated to a candid discussion about national security and foreign threats. Panetta also took the opportunity to thanks students from military families based on nearby Fort Bliss for their sacrifices. Defense Secretary Leon E. Panetta teaches a history class at John L. Chapin High School in El Paso, Texas, Jan. 13, 2012. Students of Kristina Mills’ 11th grade U.S. history class were treated to a candid discussion about national security and foreign threats. Panetta also took the opportunity to thanks students from military families based on nearby Fort Bliss for their sacrifices. SHARE: Download: Full Size (3.92 MB) Tags: Photo Essays Credit: VIRIN: 911514-C-PFL93-982.jpg Photo Gallery