Staff Sgt. Nolan Strange, front, and Tech. Sgt. David Torres, 2nd Civil Engineer Squadron pavements and heavy equipment operators, use excavators to help begin construction on the Bossier Gate at Barksdale Air Force Base, La., Dec. 10, 2013. The gate will be receiving upgrades to improve base security and working conditions for 2nd Security Forces Defenders and is anticipated to open Spring of 2014. (U.S. Air Force photo/Senior Airman Kristin High)