A Marine Corps F-35B Joint Strike Fighter does a short takeoff (STOVL) from Patuxent River Naval Air Station, Md., in 2011. Eighteen years after development began, a version of the plane designed for the Marine Corps is expected to be deemed "combat ready." Cliff Owen/AP hide caption

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Yusra Siddiqui, right, and Zoha Ahmad, who came with others from the Islamic Society of Greater Chattanooga to offer their support, pray during an interfaith vigil at Olivet Baptist Church held in remembrance of victims of Thursdays shootings. Doug Strickland/TNS/Landov hide caption

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Katie Gorz (left) performs the ammo can lift next to male Marines as they go through the combat fitness test. The Marine Corps is experimenting with inserting some women into combat infantry roles that have historically been limited to men. At Camp Lejeune, female Marines are undergoing the same training as their male counterparts for combat arms. Travis Dove for NPR hide caption

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Capt. Nathan McHone was killed in Afghanistan at age 29. Courtesy of the McHone family hide caption

toggle caption Courtesy of the McHone family