Article Photos: Obama touts energy strategy, support for southern portion of Keystone XL pipeline 18/79

President Barack Obama greets military and civilian personal from Tinker Air Force Base after exiting Air Force One at Tinker Air Force Base in Midwest City, Wednesday, March 21, 2012. President Obama is in town for a visit to Cushing, Okla., on Thursday. Photo by Bryan Terry, The Oklahoman